DIY :: Turn Solid Castile Bar Soap Into Liquid Castile Soap

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DIY Turn Solid Castile Bar Soap Into Liquid Castile Soap : Vintage Kids | Modern World

Castile soap is incredibly versatile and a staple item in our house.   Eliminating toxins in your diet is hard enough – thankfully, using castile soap is an easy way to eliminate them in your cleaning and body care routines!

Today, I want to show you how easy it is to turn a BAR of soap into a jar of LIQUID soap – but if you’re still curious about castile soap, Emily at Live Renewed has a great article about the many uses of castile soap that I definitely recommend!

Personally, we use castile soap most often in our homemade cleaning products; I use it on my counter tops (mixed with water in a spray bottle, add some tea tree oil and you have an instant, all natural disinfectant spray) and also as the base for my laundry soap (which we adore and I can’t bring myself to use anything else!)

However, the initial cost for a 32oz bottle of Dr. Bronner’s liquid castile soap can take a chunk out of the grocery budget (it’s $12-14 here in northern Indiana).  Granted, it lasts forever, and provides over 4 gallons of laundry soap, but none the less, a chunk of change for soap.

I knew there had to be a better way (plus, all the mumbo-jumbo writing on Dr. Bronner’s bottles leads me to wonder about his adventures during the ’60’s…)

I made the switch to Kirk’s Coco Castile.

soap 9


I was able to purcahse 3-4oz soap bars for $4 at my local grocery store, compared to $5 for ONE-6oz bar of Dr. Bronner’s. Now, the issue was turning my bar soaps into a liquid…which meant I just needed to add water.

soap 7


Plus, Kirk’s only contains a few, naturally sourced ingredients:

soap 8




Here’s an incredibly easy way to turn solid castile soap bars into liquid castile soap…

soap 6

Using a Mason jar (which I highly recommend for this, but any other container capable of holding hot liquid would be fine), measure out approximately 2 3/4 cups of water.  Using a tea kettle or a microwave, bring it to a boil.  While your water is boiling, remove the paper from the soap bar and place it on a cutting board. (side note: that’s not black mold on my cutting board at the top of the photo above.  I caught the cutting board on fire.  Long story. Everyone’s fine. Not relevant to this post.  Just wanted to assure you that it was sanitary.  Back to the soap, shall we?)


Using a big scary knife, chop the soap into little pieces (it’s soft and cuts easily)

soap 5




return the chunks to the Mason jar…

soap 4



…and carefully add in your boiling water.  Because Castile soap is, by nature, oil based, it will start to melt immediately.

soap 3





You may end up with a few stubborn chunks at the bottom of the jar:



Simply let the soap and water mixture set for 15–20 minutes, and the remainder of the soap will melt completely, and voila:

tutorial for turning solid bar castile soap into liquid castile soap!


…your castile bar soap is now LIQUID castile soap!



What are your favorite uses for castile soap?



This post is linked to Whole Foods Wednesday, Penny Pinching Party, {Wow Me} Wednesday, Your Green Resource, Transformation Thursday, A Crafty Soiree, Hookin Up with HoH, Share Your Cup Thursday, the 36th Avenue Party, Adorned from Above Blog HopTitus 2 TuesdaysOne Project at a TimeTeach Me TuesdayShow Me What You Got, Raising Homemakers, Women Living WellFrugal Days Sustainable Ways Allergy Free Thursdays

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204 Responses to “DIY :: Turn Solid Castile Bar Soap Into Liquid Castile Soap”
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    Thanks….this sounds soloist much easier than stove top version or the cold water version which requires a week of daily squeezings;)

  2. Ooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! thank you so much for sharing this!!!

  3. Ohhh I should look for that brand of soap! Dr B’s is crazy expensive. Have you tried adding in your own scented oils to the plain? I wonder if you could get some nice peppermint or citrus that way? It would be great if you shared this and any other projects you have at my link party
    micki @addhousewife recently posted..Pin Inspiration Party time!My Profile

  4. Cheeky Bums

    Micki – thanks for stopping by!! Yes – I’ve added essential oils and it’s great for counter top sprays, etc. but when I add it to my laundry soap, it loses it’s potency in the wash and doesn’t scent the clothes 🙁 I usually add EOs when I put my clothes into the dryer, and that does scent them mildly and it’s *loverly* 🙂 -kelsi (and thanks for the linky info! we’ll check out your site!!!)

  5. I have never heard of this soap. It sound quite marvelous! Thanks for sharing with Share Your Cup.
    Jann Olson recently posted..Pink Tea!My Profile

  6. I use that brand of bar soap to make homemade laundry detergent, you know the formula — a grated bar of soap, plus washing soda, plus borax, plus water, to make 2 gallons. (I haven’t checked out your laundry soap recipe yet, but the one I use is all over the web, in slightly different variations on what I do.) I have bought Dr. Bronners, but you’re right, it’s so expensive! Thanks for this easy tutorial. (I love your sense of humor, by the way. Burn on the cutting board — sounds like our house. Big scary knife. Chuckle!)

    I like your website’s version of the CAPTCHA code. Unlike so many blogs, yours is actually one that I can see. Sometimes I give up on trying to comment because I can’t make out either the visual or audible code!
    Jean recently posted..GF Muffins that’ll fool you!My Profile

  7. Cheeky Bums

    Jean – thanks for stopping by! glad you enjoyed it! We love our homemade laundry soap and I can’t bring myself to use anything else! It works so well!! all the best! – kelsi

  8. Lori

    If you add some tea tree or lavender essentials oils to this liquid, you can use this as shampoo. For conditioner, i use coconut oil.

  9. Cheeky Bums

    that’s a great idea – and would smell wonderfully! thanks for the tip!!

  10. Melissa

    Do you have any tips for doing this process with Dr. Bonner’s? I tried it and I am having a hard time getting it all to dissolve. I am kicking myself now because I saw that brand at Meijer and passed it up. Darn it!

  11. Cheeky Bums

    Melissa, to be honest, I’ve never tried it with Dr. Bronner’s because I’m too cheap 🙂 However, there’s not much difference in ingredients between Bronner’s and Kirks – they’re both still coconut oil based, which means they should both melt. Again, I haven’t tried it, but if it’s just not thoroughly melting, I’d stick it on the stove in a pan on low heat and see if you can’t get it to break apart that way. Also, if it’s not dissolving totally (and it looks more like sediment than big chunks) I wouldn’t worry too much. If you’re using it for the laundry, as long as the pieces aren’t too large, you’ll be fine. Hope that helps. If that doesn’t work, shoot me an email at kelsi (at) cheekybumsmarket (dot) com and we’ll work it out! I’m curious now! 🙂

  12. I find Kirk’s castille soap at Walmart. I think that 3 bars are $3.97 here in my area. I aslo turn mine into liquid soap and use it for everything! Great stuff!

  13. I made this the other day. Once it was completely cooled it isn’t exactly liquid, or totally solid either…what did I do wrong?
    Kelly recently posted..Ladybugs and ChickensMy Profile

  14. Cheeky Bums

    Hey Kelly – nothing! you did it right! it ends up being a weird, lumpy, gel-like mixture and it will most likely want to separate. If it gets really solid on top and there’s water underneath, then just take a whisk or slotted spoon and mix it back up. Our laundry room gets really cold so mine always separates. You just want to make sure that you don’t have any huge clumps when you put it in with your laundry, but it will be a really weird texture, so don’t worry!

  15. Amy

    I just tried it with the Kirk’s soap, and the soap chunks haven’t melted at all, even after an hour. I boiled the water in the tea pot and poured it over the soap chunks. I put it in the microwave and heated it to a boil again, and it still hasn’t melted! Any suggestions?

  16. Cheeky Bums

    oh no!! I had this happen once, and the reason WHY exactly, still escapes me. However, when I couldn’t get them to melt completely, I waited until the water was cool enough to stick my hand in and I squished them into as tiny of pieces as possible. There were still a few small pieces, but I was able to break them. In my case, i realized that it was because I hadn’t cut the pieces into small enough chunks before I poured in the water. I try to cut it as fine as possible, to avoid this, and I haven’t had problems since. So sorry! 🙁 If this doesn’t work for you, or if you keep having trouble, email me at kelsi (at) cheekybumsmarket (dot) com and we’ll get to the bottom of it 🙂

  17. Kim

    I have been looking into how to turn castile bar soap into liquid castile for weeks now….thanks so much for this. I wanted to make my own foaming hand soap with this but wasn’t sure how. My only question is….how much of the liquid castile should I use in my soap bottle (since the way you converted this to liquid it looks pretty concentrated)I was thinking maybe a tablespoon or 2? What is your theory?? Thanks a bunch!!

  18. Cheeky Bums

    Kim, using this method, and with this brand, I’d say right around 1.5-2 Tb in a 4-6 oz container and you should be great!! hope it works well for you – this will definitely cut your costs!!

  19. Ron Powell-California

    This is the soap I grew up using and most of my relatives used it to wash their hair with (the bar soap). It lathers good in cold water and really helps your hair. My aunt always used it for her hair and she had the prettiest, shiniest hair I’d seen. I’ve been looking for it for awhile. I have never seen it t Walmart though.

  20. Samantha

    I followed the directions to a tee including using the Kirk’s Castile. Mine came out goopy! lol When I made my laundry detergent, it separated and I just shake it up before each use. The entire jar of liquid castile is goopy even after a good stir/shake. I am making my baby wipes using the goop since it will melt in the hot water, but was wondering if yours came out a true liquid? =)

  21. Cheeky Bums

    Samantha…hmm…goop? it is a tad slimy, but it should be thoroughly incorporated. it will separate if left by itself in the jar, but shaking it does re-mix it. I don’t personally have this trouble in my laundry detergent, and since I’m not sure what your recipe is, I’m not exactly sure what to tell you!!!! :[ I have had troubles incorporating it before, but it either needed to set longer at the initial making of it, or, my house was cold and so it cooled down too quickly, so I had to reheat it on the stove to get it to break down. The separation is not abnormal, but I’m just not sure about your goops! Were they chunks? I would try reheating it if, when you first make it, it’s not like a true liquid and is different that the pictures that I listed. if that doesn’t work, let me know – or email me at kelsi (at) cheekybumsmarket (dot) com and we’ll get to the bottom of this! – kelsi

  22. Samantha

    To clarify, I did use your laundry detergent recipe which separates, but I just shake it up each time and am good to go. The liquid castile is just a solid jar of thick (clean!) goop (no chunks). 😉 I expected it to be more of like a milky liquid. I will try reheating it and just see how it goes! Thanks for the response!

  23. Tammy

    They do have it at Walmart, but it is in a weird spot over in the beauty section. I can’t remember exactly where, but it is there. ( It wasn’t with all the regular soaps.)

  24. Billie

    I made my liquid soap last night, but it is still very watery. Any idea why? I did put it in a plastic bottle with a lid after it had cooled enough. Could that be the problem?

  25. Cheeky Bums

    Billie, as long as you used the right ratio/recipe, then it’s totally fine. it will seem very runny and it will NOT be like the consistency of liquid dish soap. if you’d like it to be thicker (depending on what you’re using it for) I’ve heard that you can add vegetable glycerin (which you can find in health/beauty at most large stores) and that will thicken it. it still works fine, but yes, it will be quite thin. hope that helps! 🙂

  26. Billie

    Thanks. We’ll give it a try as is then.

  27. Tracey

    Thank you for posting this recipe. However, what about preventing bacteria growth? I have read many other places that you need some sort of preservative to keep this safe and bacteria free? It would take me a while to use all of this soap, and I don’t want it to become dangerous. Thanks!

  28. Cheeky Bums

    Tracey, thanks for asking – that’s a great question. First off, if you think it will take you awhile to get through the entire jar, there are a few things you can do…
    – make this in smaller batches. maybe start out with cutting it in half and see if that is enough. it’s quite easy to make, so if you run out too quickly, you can easily make another batch. -sanitize all of your utensils/containers and let the water boil for at least 10 minutes before mixing it with the soap chunks, in order to kill the bacteria. This is a major one, esp if you are wanting to save it for longer periods. (you can also start out with bottled, distilled water, which I use when preparing homemade remedies and anything I need to store for long periods.) -add in 10-20 drops of tea tree oil once it cools. This is naturally anti-bacterial and kills mold, so it will double or triple the shelf life, plus it’s great for using then on hands and dishes, as it will also help disinfect whatever you clean! Honestly, I wouldn’t worry too much about it. I’ve never actually heard of this being a problem. I’m not saying it couldn’t happen, but I’ve never had an issue with it molding or going bad. Let me know if you have trouble with it, or if anyone else has had this issue, please comment. I’d love to hear others’ experiences!!! – kelsi

  29. Tracey

    Great! Thanks, Kelsi!

  30. Erin

    Hi Melissa–
    I actually tried this with Dr. Bronners. The problem is that Bronner’s bar soaps now use palm oil, which is a major solidifier. Basically, you will get a liquigel soap. It still works great in a pump dispensor because of the water, but I actually ended up with around 40oz of SEVERLY MILD peppermint soap. Great for washing hands, as a base for shampoo and body wash, etc. I am going to WalMart tonight, though, to get some Kirk’s. The ingredients seem less…solid…for lack of a better term. Hope that helps. =)

  31. Cheeky Bums

    agreed Erin! I’ve tried Dr. Bronner’s with the same results. Kirk’s bars are actually smaller (4 oz vs. Dr. B’s 5 oz) but I feel like they work better. It may be the palm oil in Dr. B’s that makes the difference, but I prefer Kirk’s for laundry and really dirty projects. thanks for the comment!! all the best! – kelsi

  32. Can you use this as a dish soap?

  33. Cheeky Bums

    Cora – you definitely can, but it might be weird to get used to it at first, because it doesn’t foam or bubble! it’s still an excellent de-greaser and there’s no reason that you can’t – just know that it will play tricks with your mind because there won’t be bubbles!! It’s also concentrated, so you won’t need very much. If you try it let me know how it goes. I’m still partial to bubbles when it comes to my dishes, so I am still looking for a good homemade recipe. – kelsi

  34. Sujatha

    Hi, I tried making the liquid soap with Kirks. As you said I grated the soap and put it in 2 cups of distiller water. It was a gooey mixture after the soap had melted. Then I thought I had to heat the water, hence I added 2 more cups of the distiller water and boiled it and then added it to the soap. Now my soap solution is clear but not enough bubbles. Hence I grated 2 more bars to the same water it is a cloudy mix before the heating , once I put it on the stove it becomes a clear solution but still not happy with the consistency! I don’t know what I could have done wrong. I remember reading about the boiling of the water too. Now I have so much soap button bubbles! Pl help!thanks

  35. Ally

    Walmart carries Kirk’s Castile soap on a bottom shelf or very top shelf in the isle where they keep other bar soaps, not with the green products or health stuff. If your Walmart does not carry it… You can ask the store manager to order it just for you. Many local supermarkets can take requests too. You only have to ask. Expect to pay between $3 and $4 for a 3 pk of Kirk’s bar soap. The stores who are willing to special order for you, may expect you to buy as much as $12 to $18 worth of soap to make it worth ordering for them. At last resort, it is sold on ebay and amazon, but you will pay for shipping.

    For those who don’t like the scent of this soap, you can add EO in a scent you like, or order Fragrance free soap.

    My family and I are sick of being sick. We stumbled on the EO world and we are thrilled. Now we are diving head first into the TOXIN-FREE zone for all our household and personal care products.

    I am on a roll looking for more household products that I can replace with this great find of Kirk’s Castile soap. I use it for bath soap, body wash, shaving and shampoo. I use it for dish soap and hand soap. I have made the 2 gallons of laundry soap too. I have used it to wash the counters and floors with great success. I have used a separate bar to wash the dog, as her hair gets on the bar and we don’t want to share that with her. Is there more? I need more ideas. Allymonami [at} aol [dot] com.

    I am wondering how I can use it to make bubble bath. My son uses baby shampoo now that only costs me a dollar a bottle and it makes him happy to have lots of bubbles in the bath tub. What can I do to get this Kirk’s soap to make better bubbles in the bath?

    What else can I use it for?

  36. Ally

    I had a problem with the consistency of this stuff getting clogged in my spray bottles. To remedy my problem I bought cheap water bottles that have a squirt type top. I had to pick some plain ugly ones so my son wont accidentally drink from there. I use simple masking tape to label the bottles. I put my recipe on each bottle so I can remember what to add when refilling the bottle. One is shampoo/body wash, one is dish soap, one is counter cleaner, one is everything cleaner… and so on. All of different concentrations that have worked for me. These quirt type water bottles are easy to shake before use for times when the soap looks separated.

    I live in Florida where we get freezing cold weather for maybe two or 3 weeks of the year. During those weeks I can place my bottle of soap in a warm bath to warm it up before use. In the shower or kitchen I just use the bar soap for those cold weeks.

  37. Cheeky Bums

    Ally – that’s a great idea! The castile soap does separate, esp if it gets cold, but it remixes quite easily, like you said. I’ve also found that it DOES NOT mix well with vinegar! It causes a chemical reaction, and although it’s not the end of the world, it makes it clump and clog, so I keep my vinegar in a separate bottle. it’s great to be saving money!!! 🙂 thanks for stopping by!! kelsi

  38. Cheeky Bums

    I’m still looking fora good sudsing soap. Unfortunately, most of the good bubbles come from synthetic ingredients 🙁 You seem to have a lot of the bases covered! I like to use it as a veggie wash – mix some into a full sink of water and let your produce set in it for awhile – it gets them really clean, and if you are worried about pesticides, you can throw in some vinegar. This doesn’t necessarily nullify the chemical sprays, but it helps cut any wax that was sprayed that the pesticides cling to. It also makes a great base for homemade diaper wipe spray – our recipe is here: http://www.vintagekidsmodernworld.com2012/07/living-naturally-homemade-diaper-wipes-and-spray-the-new-and-improved-version/

    if you stumbled across anything else, please let me know!!! kelsi

  39. Cheeky Bums

    oh no – how crazy!! well…you definitely have alot of soap now!! 🙂 The consistency will be quite thin – almost like water – when it’s done correctly. Also, it won’t be very sudsy – by nature castile soap doesn’t suds very much because there is no sodium lauryl/laureth sulfates (which is good!). it will be hard to get used to using it, since it’s thin and doesn’t suds much, but it’s still completely effective and works wonderfully around the house. If you have any other questions, please let me know!!! – kelsi

  40. Brea Plum

    Thank you so much for this…I can find Kirk’s bar soap in many stores in my city but nobody sells the liquid. Now I don’t have to order it online anymore!

  41. Kristyn Taylor

    Have you ever doubled or tripled the batch to cut down on the frequency of making the soap?

  42. I made this & it turned out just like it should have. I put a few drops of tea tree oil in mine. My question is, do you use it as is or dilute it down for hand soap, cleaning, etc. Thanks for the great tutorial.

  43. Have you ever added glycerin to this recipe? If so how much? I have been reading about turning bar soap into liquid soap and have come across a lot of recipes. In many of the other recipes they include glycerin and they also use between 8-10 cups of water. However, they also don’t use castile soap, could this be the reason for the difference? I have bought and grated my Kirks soap already.
    Just curious, would this recipe be closer to what you would get when you purchase Dr. Bronners more concentrated versus the other recipes I have seen out there? I plan on using my end product for hand soap, a base for body wash, and cleaning around the house.

  44. Patti Tillis

    Mine turned semi solid in my dispenser after a few hours. Can’t get it to pump out at all. I followed everything to the letter except used Dr. Bronner’s castile bar soap. Is this why? Is there any way for me to salvage what I have?

  45. Debbie

    I just made this and after waiting for the 15-20 minutes it is still clear. Just one bar of soap per recipe right?

  46. I have to tell you, I was serious skeptical about your recipe for laundry soap. I’ve been making laundry soap for four years, but was excited to see a more natural recipe. It was watery, seperated even after running it through the blender, and didn’t seem to have enough soap in the mix to do anything. I thought, maybe it is because I used Kiss My Face olive instead of Kirk’s coconut. But here I was with this bottle of disobedient “laundry soap” (sarcastic tone). So, I dug through the laundry basket and got all the stinky, dirty, wet, forgot items and combined them into one glorious test load. My pink sweater smelled like wet dog and had been through the wash twice. I don’t need it in summer, so it wiggled down to the very bottom of the hamper to hide in shame. It bloomin’ worked. My sweater finally smells clean…along with the rest of the load. Yeah! Thank you for a wealth of information and some great new ideas. You rock

  47. Cheeky Bums

    wahoo1 so glad it works for you!!! my husbands clothes are RANK from his manual-labor job and this is the only thing I’ve found to cut the stank! 🙂 thanks for stopping by! kelsi

  48. Cheeky Bums

    Debbie -yes, just one bar. Don’t freak out if it looks clear. Depending on what kind of water you have (soft vs. hard)and what the temp is in your house, it may look clear. Don’t worry-the soap is still there!

  49. Cheeky Bums

    Patti – Dr. Bronners is slightly larger in quantity than the Kirks (by a full ounce) so you ended up with a more concentrated version. You can definitely save it – just re-warm it and add about another 1/2 to 3/4 cup of water to the mixture and start with that. If it is too concentrated, it’s hard to pump out because the oils re-solidify. hope that helps!

  50. Cheeky Bums

    Vanessa, Yes, it is similar to the liquid version of Dr. Bronners. Castile soap can feel a little dry once you wash your hands with it, so it can help to add a little bit (just a drizzle per bottle) of olive oil to soften the effects. I have never added glycerin to this, so if you try it, let me know. Usually, glycerin just helps and oil/water mixture stay combined so that it doesn’t separate, but since you boiled the water, this helps the oils emulsify, so there’s less chance that it will separate. If you’re using it around the house, then you don’t have to worry about the olive oil – that’s more for moisturizing on the skin. Let me know what you think! – kelsi

  51. Cheeky Bums

    so glad it worked for you!! Yes, you can use it for hand soap, but it can leave your hands feeling a little dry, because the oils are so diluted. I like to add a small drizzle of olive oil per bottle of soap, so that it helps to leave hands and skin soft. As far as home use, I liek to dilute it 1:1 with water, but for a degreaser, I leave it full strength. thanks for popping in!! hope that helps! kelsi

  52. Kyna Pearce

    Thank you so much for this recipe! I am going to try it ASAP! I was just wondering how liquidy the soap turns out to be?

  53. Jesse May

    Hello! I don’t even remember how I came across your blog, but awhile back I pinned this recipe to Pinterest to use later. Well, I just tried it out! I’m so excited to have an inexpensive alternative to buying liquid castile soap! (And I’m hesitant to buy Dr. Bronner’s, too! Freaky packaging!) As simple as the recipe is, I probably wouldn’t have thought of it myself. Thank you!

  54. Cheeky Bums

    Jesse, so glad it worked for you!! It is SOOOO much cheapier!! thanks for stopping by!! – kelsi

  55. Cheeky Bums

    Kyna, Ive gotten emails about varying results that people have had. Some say it’s glumpy and cloudy, and some say it looks just like water and they’re wondering if they did it right! As long as you follow the recipe, well…I can’t guarantee! The temperature of your house and the quality of your water are the 2 biggest variables. Personally, our water is really soft, but has a lot of lime and chlorine (blech) and mine comes out slightly cloudy, but fairly “watery”. Don’t worry too much about the consistency – it works great either way! -kelsi

  56. Samantha R.

    I go ahead and get my already made castile soap from Makes it easy since I never have the time to make it myself. Makes my skin feel lovely without all the harsh chemicals.

  57. Laura

    Thanks for sharing your recipe. I’m new to homemade solutions, and I find it rather confusing when trying to find the “right” recipe to try. I’ve seen this same recipe posted in a lot of places, only with varying amounts of water. Some with glycerin and some without. Your recipe calls for 1 bar of soap and 2-1/2 cups of water. Another recipe I read calls for 1 bar of soap and 12 (yes, twelve) cups of water!

    I just made my first batch a few minutes ago (using 6 cups of water) then sat down to find other recipes, in case this one doesn’t turn out well. And when I came across yours, with much less water, I’m wondering how diluted mine will be?!? If yours came out watery, I wonder how watery the 12-cup version would be. But then again, that recipe called for glycerin – so maybe that will gel it up a bit?

    My real question is, will there be any suds when washing my body? Or do will I just feel the oiliness of it as I wash?

  58. Cheeky Bums

    Laura, the recipes you’re seeing for such a large amount of water (12 cups) is actually not completely off base. My recipe is for a concentrated soap, like a substitution for liquid Dr. Bronners. Once diluted, it could be used in a 1:6 ratio (soap : water) so using 12 cups instead of my 2.5 isn’t crazy, it just means you need a bunch of jars! As for the consistency, yes, it may look watery, but don’t be fooled – it’s still there and it works great. Many people add glycerin to their soaps, which is natural, but it’s just used so that the oil and water won’t separate. As for sudsing, don’t get your hopes up – the suds in most soaps comes from sodium lauryl sufates, carcinogens, that do nothing but make it suds. You may get a few bubbles with this, but not many. It will seem weird at first, but don’t let that worry you – it’s still working and you’re still clean! And actually, you won’t feel oily, although it’s an oil-based soap. Many people actually feel a little dry and prefer to add a few drops of olive oil to it when using it as a body wash. Hopefully that helps!! If you have any other questions, let me know!!

  59. Danielle

    Referring to the comment where you said you made a mistake by not cutting the pieces small enough that’s why you couldnt get it to melt… instead of cutting the bar into tiny pieces, can we just grate it with a cheese grater to help with the melting easier? Also, if it does seperate and you have to re-stir, is it still as good or how long can this be stored before going bad?

  60. Jennifer Fernandez

    Hi! I’m brand new to this blog and I’m loving it! 🙂 Question about the liquid castille soap. Do you use this recipe in your homemade laundry detergent recipe when it calls for liquid castille soap? OR do you puchase your liquid castille soap for the laundry detergent recipe? Hope that makes sense. Thanks! 🙂

  61. Stacy

    I would like to use this as a foaming hand and body wash. Have you ever tried this recipe using the 1:6 ratio in a foaming bottle? Also I would like to use glycerin, do you know how much I should use? Have you ever used coconut oil with this recipe? Thanks!!

  62. Tina Stys

    I am going to try this today. Incidently, if you love Kirk’s Castile soap you can get it very cheap at

  63. Yvonne

    Thanks for this info. I was wanting to start making hand soaps as well as other soaps and found that the Dr. Bronners to be more expensive. I already by the Kirk”s Castle soap for my laundry detergent I make. Could you share how you make other sops with Kirk’s Castle soap? Here is my recipe for my laundry detergent.

    It’s only four ingredients!

    1 (4 pound) box of Super Washing Soda

    1 (4pound) box of Baking Soda

    1 (4 pound) box of Borax

    3 bars of Kirk’s Castile soap–Shredded

    Mix well in a large container.

    Add two heaping tablespoons to each load of laundry. Enjoy the sweetness!

  64. Cheeky Bums

    Yvonne, thanks so much for sharing!! I’ve just started making a powdered version (mostly to save on time!) and I use the exact same recipe!!! I LOVE it! thanks for popping in! – kelsi

  65. Cheeky Bums

    Tina – I hope it worked well for you!!! I will definitely check it out on Vitacost! thanks for the tip!! – kelsi

  66. Evie

    Great blog and great recipe! I’m curious, I was always led to believe that castille soap meant it was pure olive oil soap with no other oils? I make a bar of castille soap that is olive oil, water and lye. Olive oil soap is supposed to be particularly gentle for babies, kids or those with sensitive skin. Do you think my castille soap would work with your recipe even tho there’s no coconut oil? Alternately, I have come up with my absolute favorite recipe that uses coconut oil as the main ingredient, then olive oil and some shea butter, and some other ingredients. It produces the creamiest bar of soap, with wonderful bubbles and lather. Maybe this soap would work better as a liquid soap? Thank you again for the great recipes on this blog. 🙂

  67. Cheeky Bums

    Evie, thanks for visiting!! Your soap recipe sounds wonderful!! I haven’t been brave enough to try to make my own yet! 🙂 from what I’ve studied, castile soap IS originally made from olive oil (it came from the Castile region of Spain, where they had plentiful olive groves). The term seems to be used rather loosely now, in our modern day, and so it describes any soap made with a vegetable oil base (coconut, jojoba, hemp and olive were the most common that I found). So yes, you are correct, but people have started to use that term interchangeably for various soap recipes, it seems. Either way, everything I’ve read has said that castile soap is the purest and most gentle, and your olive oil based soap would be perfect for littles and those with sensitive skin. As far as using it in this recipe, I wouldn’t see a problem with it. The consistency may be different, because the oil base has a different melting point, but regardless, it would still work and be effective. If you give it a shot, let me know how it goes!!! all the best! – kelsi

  68. brian

    do you have to use all three bars of the soap or just one?


  69. Cheeky Bums

    For this recipe in the quart sized mason jar, I just used one bar. If you have a large enough jar, you can always triple it though!

  70. Ericka Smith

    Recently I was given a bar of soap from lush which I know cost around $20 pretty ridiculous in my opinion but I would love to make it last by turning it into liquid soap. I was curious if the quality of the soap really comes through once you’ve turned it to liquid soap though I would hate to waste such an expensive bar on an experiment that didn’t work. Also the soap from lush is extremely soft would that affect the quality of the liquid lotion? Thanks!!

  71. Cheeky Bums

    oh my goodness Ericka..that must be some amazing soap!! I’m only going on experience here, but my best guess would be that yes, if it’s a really soft luxurious soap in bar form, then melting it and making it a liquid shouldn’t change that. It all depends on the ingredients, but in playing around with various soaps, it seems to me that the overall *feeling* of the soap stays in tact, because in essence, all you’re doing is adding water to it! The recipe that I have listed here on my blog seems to work best with regular cleaning tasks – laundry, floors, counters, etc. If you’re interested in using it as a hand soap, I would think about adding a little bit of glycerin, which is a bonding agent, and it will keep the water and soap from separating later on (because you’re mixing oil and water). Since it’s such an expensive product, you might think about cutting the bar in half, and then halving the recipe I have listed here. Then, if for some reason you don’t like the results, you still have some of the bar left to use in solid form. If you give it a shot, let me know!! It must be amazing stuff – I’ll have to take a look at their products! thanks for stopping in!

  72. Diamond

    I’m switching over to all natural cleaning supplies at home, and I was just about to order Dr. Bronner’s Liquid Castile Soap when I came across your blog 🙂 Thank god there is a cheaper solution!

    Many recipes I found call for Liquid Castile Soap – can you substitute the home made version 1:1 in these?

    Also, was wondering whether it mixes well with water, or whether everything I use it in will have to be shaken up before each use.

    Examples of recipes I will try: body wash, foaming hand soap, dishwashing liquid.

    Thanks in advance – and thank you for this great article! 🙂

  73. Cheeky Bums

    You’re welcome!! Yes, you can use it in a 1:1 substitution anytime a recipe calls for liquid castile soap. As for the separation…it’s unavoidable, unless you add some glycerin as a binding agent. You can find it in a health food store or pharmacy at a big box store. This allows the oils and water to bind so that you won’t have to shake it up! thanks for stopping by and glad it saved you some money!! 🙂 – kelsi

  74. Diamond

    Thank you for the fast reply! Now all I have to do is track down Kirk’s Soap in Toronto, which may or may not be a hard task..

    Thanks for the glycerin tip! I’m not much of a chemist but seems you really know this inside out. How much glycerin to how much Liquid Castile Soap?

    Thanks again 🙂

  75. Chas H

    Great info! I was wondering if you could add oils like hemp or jojoba to make it a bit more moisturizing? My hands are SO dry in the winter that they often crack and bleed. I’d love to make some hand soap that would help! TIA!

  76. Hana

    I’m using this for my retainers… would this work? I’m not sure it would work or not since we vocally diluted it with the water… please respond quickly I bought it and it’s melting right now but not immediatley… I don’t think I cut it small enough :/

  77. Cheeky Bums

    Yep, definitely. I’ve never tried either of those, hut you can add about 1/4 tsp of olive oil (to start, and then you can adjust up from there). The castile by itself can seem to dry skin, so if you’re using it for body care, then I’d definitely play around and see which you prefer. If you give those a try, let me know how it goes!!-Kelsi

  78. Cheeky Bums

    Hana, I’ve never tried it on retainers (no one in our family has them) so I really can’t say for sure and you may want to check with your dentist (i truly know nothing about retainers!) Honestly, I wouldn’t know why not…it shouldn’t leave any residue. If you’re interested in antibacterial soap, I’d look into some food grade essential oils like clove, Rosemary or tea tree. Hope that helps, and if it works I’d looooove to know! All the best!

  79. Taco

    Thanks for this information, I’m going to try this!

    Also, Dr. Bronner’s bottles don’t exactly have mumbo-jumbo. He was a fascinating guy ( ) and it all made perfect sense to him 🙂

  80. Biggles

    I knew there had to be a way to do this, Thank You Kelsi for figuring out the formula for all of us. I’ve been using Kirk’s brand, Grand Pa’s Pine tar and Witch-Hazel bar soap for itchy scalp, no flacking just itchy. Both bars are .75 oz small that their Castile bar, do you think reducing the water by 1/4 or 1/2 cup would be the ticket?

  81. Cheeky Bums

    I would start with reducing it by 1/2 c. At least that’s what I’d do 🙂 Let me know how it works for you!! – kelsi

  82. aura

    thank you for this recipe. I made this today so to replace liquid Dr bronners soap. Do you have an suggestions on what to do when it gets that gooey texture once cooled for using it in homemade baby bath wash and also for homemade baby wipes as I was using the Dr brinnef liquid soap. your help is greatly appreciated.

  83. Cheeky Bums

    Aura, there are a few things you could try…First, this really stretches a lot farther than you think, so you may be able to get away with using less than normal…so you can always experiment and see if simply using more water would help with the consistency. The other option is trying a few drops of some vegetable glycerin. That will help stabilize the consistency so that it doesn’t separate as much, which will also cut down on the goo 🙂 And finally, you might want to try using filtered water, as opposed to tap water. Everyone’s water (esp if it’s city water) has a different chemical makeup, which has a MAJOR affect on saps, detergents, and how well they work. The chemical makeup of your water and the additives in it may be making it goopier than normal because it’s reacting with the oil-based soap. Also, keeping it in a warmer area will help – I’ve noticed that my downstairs stays cooler and so my soap separates faster and is just harder to work with in my downstairs – again because of the oils coagulating at cooler temperatures and glumping together. Hope that helps some!!! Let me know if you’re still having trouble! – kelsi

  84. aura

    thank you for your response. I did use distilled water because our water is packed full of different minerals (we get our water from our well) but I will definitely try the vegetable glycerin. I will let you know how turns out and thank you once again:-)

  85. Jennifer

    Just wanted to say thank you so much! I was grating up a bar of castille soap, planning to liquefy it, and my hands were getting really tired! On the positive side, the grated soap really seems to liquefy quickly. I’ll look for Kirk’s soap next time I go shopping in the mean time , I had Dr Bronner’s bar on hand. And love the mason jar suggestion, whoo hoo! Happy New year!

  86. Cheeky Bums

    You’re very welcome! So glad it worked so well for you! And Happy New Year to you too! – kelsi

  87. Crystal

    Hi! Does it clump up after it cools or after it’s settled for a while?

  88. Kelsi

    Crystal, yes, the mix can separate if it sets for long or gets cold. If you shake it up gently, it’ll go back to normal. Otherwise, you can add a few drops of vegetable glycerin (available at big box stores or health food stores for a few dollars) and this will help the ingredients gel so that it won’t separate. Hope that helps! – kelsi

  89. THANK YOU SO MUCH. I have been trying to source liquid castile soap here in Aus for my body wash and dishwashing liquid and it is so EXPENSIVE! Great blog. Thank you!

  90. Kelsi

    you’re very welcome! I’ve lived overseas (Caribbean and Europe) and it was SO expensive over there – I can’t imagine how pricey it would be to keep it regularly stocked in your pantry! so glad it helps – and thanks for popping in!! -kelsi

  91. Thanks for the quick reply. Should I be aiming to buy organic or is it much of a muchness? Thanks, Charde

  92. Kelsi

    Organic anything is always preferable, but when it comes to the castile soap, I’m not as particular. If you’re concerned about sourcing and how it’s processed, then I would go organic. However, if it’s much of a price difference, *personally* I’d go with cheaper! 🙂 – kelsi

  93. coshi

    Thanks for the recipe one question though I’m a big fan of chamomile and I regularly take chamomile baths so can I add chamomile flowers to the water and add the soap as mentioned above? Would I have any problem if I do it so? TIA

  94. Amanda

    If your soap hasn’t melted after it cools pour it in a blender and blend it up. This should help the consistency be more even.

  95. Kelsi

    Coshi, you can MOST definitely add in the chamomile. However, just be aware that it could mold if it’s not used quickly. I can’t really give you a time frame on this – it would depend on how you store it. If it’s in a cold place it will definitely last longer, but I might make a smaller batch at first and see how it goes. If you give it a try, let me know! that’s a great idea!!! – kelsi

  96. Carter

    Thnk you for this awesome how to guide! I can’t even beleive your style in the kitchen. I literally have that same bamboo cutting board and cutco petite chef. Good taste!

  97. Kelsi

    Ah – you know your Cutco!!! 🙂 If I was on a deserted island, I’d have my Cutco knives with me!!! thanks for stopping in and saying hi! – kelsi

  98. Sharon Lockhart

    Wondering why you wouldn’t just grate it up with a grater?
    That would remove all the larger chunks and allow the soap to dissolve easier and faster, wouldn’t it”
    I was wondering what I could use instead of the Dr. Bronners and this will fit the bill.

  99. Kelsi

    Sharon, you could most definitely grate it – I’m just lazy 🙂 The soap s actually really soft, so it’s easy to cut, but a little tricky to grate without globbing up the grater. It does melt faster though that way, so it’s just personal preference! So glad you stopped by! – kelsi

  100. Sharon Lockhart

    Thanks Kelsi, that explains it very well, I wouldn’t want my grater to be gummed up with soap either. I will be doing this as soon as this weekend. I want to make some for replacement of my store bought liquid soap.
    Thanks again, I really like the fact that this seems very easy and so much cheaper than buying a store bought liquid soap to be gentle on my sensitive skin.

  101. Marlee

    So my first attempt at this and it turned into a thick jelly like substance.. Perhaps because I shook it at the end waiting for few last pieces to dissolve. Curious if there’s any bringing it back to a liquid without diluting to much?

  102. Kelsi

    Marlee, the consistency is pretty finicky but it’s an easy fix. If it ever gets too thick then just set it someplace warm. MY always gels if I keep it in our laundry room, where it’s a lot cooler. Try warming it up a bit and then shaking it around and that should do it! thanks for stopping by! – kelsi

  103. Cindy

    So glad I found your post! I am wanting to try making a moisturizing honey bath wash that I found online, and it called for liquid castile soap. I was doing some checking at my local walmart to see what items they had that I still needed, but they didn’t have the liquid castile. I did see the Kirk’s Original CoCo Castile soap bars, so now I don’t have to search anymore plus I get to save some money too! The bath wash recipe calls for 2/3 cups of liquid castile soap. Would I still use the same amount from your recipe? Thanks!

  104. Kelsi

    Cindy, so glad you found this then! the recipe you’re talking about for the honey bath wash sounds AMAZING! This would work perfectly, but just FYI – there is a slight fragrance to the Kirk’s. You can order it unscented from Amazon, last I checked, but I have a hard time finding it here locally. Otherwise, it will do exactly what you need it to do 🙂 (just FYI – you might want to read through some of the other comments though – this soap can separate, so just be aware. You just need to shake it to reincorporate)

  105. Lori

    How long is the shelf life of this liquid castille soap??

  106. Kelsi

    Lori, this should last indefinitely, but it may separate (because it’s oil based). If you’re wanting to store it long term, I’d boil your water for at least 10 minutes before you incorporate it, or you could add some tea tree oil to it to prevent any bacteria, and either way, I’d store it some place cold (for longer storage). Hope that helps! (we use it kind of fast around here, so I’ve never kept it for too long – I make as needed usually)

  107. I just wanted to say thank you so much for sharing this, I never thought it would be so simple, I figured there was a reason why Dr. Bronner’s was so expensive. I actually bought some of Kirk’s soap here at a super Wal-Mart (3 bars for $4) to make laundry detergent from a recipe I found online. When I got around to the shampoo recipe it called for liquid castille soap (Bronner’s) and I thought it was a bit too pricey. This was is great for us frugal people, and it’s so simple.

    Thank you!

  108. Kelsi

    Amber, so glad it will save you some dough! I’m all about cheap! 🙂 thanks for popping in!

  109. Rita

    I bought a bar of Dr. Bonner’s at grocery store tonight and it’s taking forever to melt…I’ll be super excited when it melts because there are things I want to make with it, but they require liquid castile which is why I decided to do this in the first place.

  110. I haven’t tried to make my own soap since I was 16.. I mum used to love them. Thanks for the tips as I I am thinking of making one soon. 🙂

  111. Hannah

    So happy I found this! Hey hey love your cutco I have some too and live where they’re made good old olean ny woot woot!

  112. Kristen

    I’ve been using Kirk’s fragrance-free coco castile for the past few months while pregnant. I use just the plain bars for lathering my hair, showering, and washing my hands throughout the day. I admit that I have enjoyed it. But what I didn’t know is that it creates a thick soap scum that clogs drains. (We hadn’t done anything else – just changed to the castile. My husband once spilled a bottle of Kirk’s on the floor and had to scrap it up with a paint knife, which is how we made the connection.) Now our entire household plumbing system is clogged, and we don’t know how to dissolve it. Anybody else experience this problem and have ideas? Thanks.

  113. Syahirah

    Does is came out runny? I’m currently finding a DIY liquid soap that can easily squeezed out from a pump. Anyway thank you for the post I like it 🙂

  114. Cindy

    last week i made your liquid castille soap but only used 2/3 cups of it. the rest of the soap has been sitting in the jar on my kitchen counter and it appears to be solidifying. is this ok? and what is the best way to get it liquid again? thanks!

  115. Karis

    I’m not sure what keeps happening to my question, but hopefully the third time’s the charm. I am making a recipe for shampoo that calls for liquid castille soap, and I’m wondering if, for this or any other recipe that calls for liquid castille, should I use your recipe straight or dilute it by a certain amount? Thanks so much for your help. BTW, I just found some 4.5 oz olive oil castille bars on sale for $1.50 each. Pure soap, no fancy stuff. I was so excited because it would solve the dry coconut problem. Of course I bought a lot.

  116. Christy

    Hi and thank you for the recipes and info!!! I searched our Walmart, and couldn’t find the Kirk’s or any castile soap. But, I didn’t look in the beauty section as someone stated…beauty section??? I don’t get it but, ehhh….I did find it at Walgreens though; it was 3.99 for the 3 pack. I’m getting ready to try out the liquid version, and hopefully convert all of my cleaning products over to this. I made some laundry detergent few weeks back with a recipe I found online using Zote. It’s….ok. I’m hoping this will work better. I had a hard time with the Zote not dissolving as well. So what I do now for laundry, I boil a glass of water and add the detergent to that before putting it in the washer. Also, not sure if you’re aware of this, but real coconut oil will solidify at temps below about 75°F. I have big jar in my cabinet for cooking and such, and come winter time, it’s solid, summer, it’s liquid.

  117. Kim

    Hi there, i like your recipe but I am using it to make homemade Softscrub and the recipe calls for 1/4 cup liquid castile soap. Your recipe calls for 2 3/4 cups of hot water to 1 bar of soap, but other recipes I’ve seen call for 8-10 cups of hot water. Is yours concentrated?


  118. Kelsi

    Kim, I’ve never seen a recipe that calls for that much water…that’s interesting. I’ve found my soap to work comparably to Dr. Bronner’s liquid soap, so I don’t really treat it as a concentrate. If you’re using it in a softscrub recipe, personally, I’d use the 1/4 c. that your recipe calls for. Hope it works well for you!

  119. Kelsi

    Christy, hope this recipes works well for you! And yes, the texture variances that people keep having are usally due to hard water vs. soft water and the temperature that its being stored at. It still works the same thankfully, just LOOKS different! 🙂 thanks for popping in!

  120. Kelsi

    Karis, I’m sorry – not sure what happened to the other comments!!! Personally, I feel like this recipe works comparably to Dr. Bronner’s liquid castile (unconcetrated). I would try it full strength and see how you like it. I haven’t had much luck with castile based shampoos yet – I’m still experimenting. Hope this works well for you!

  121. Kelsi

    Cindy, it will separate if it’s tored in temps lower than about 76 degrees F. If you shake it up, it should remix, but because it’s oil-based, it does separate a bit at cooler temps. Still works great, but looks funny!

  122. Kelsi

    Syahirah, yes, this does make a runnier soap, in comparison to a normal dishawshing liquid. If you want to thicken it, you can add in a littel bit of vegetable glycerin (this will also help to keep it from separating)

  123. Kelsi

    Kristin, yuck – that stinks!!! I’ve never heard of that happening!!! My best guess is that it’s re-solidifying once in your drains. Since it’s oil based, and a solid at room temperature, it will thicken back up once it cools to anything lower than about 76 degrees (that’s the point at which coconut oil melts.) If I were you and you were using it exclusively, I’d try this recipe, which waters it down. That way you aren’t using a concentrated version of it. Also, I’d let some REALLY hot (even boiling) water run through your pipes to see if that won’t melt the mess. OY….what an ordeal!!! Hope you get it figured out!!

  124. Karis

    So that’s why this soap is solid most of the time and Bronner’s isn’t – it’s the coconut oil? I don’t know why I hadn’t thought of that! Thanks for your help.

  125. I found a recipe for dish soap that I’ve been trying out.
    It calls for the solid castile soap. I’ve been having trouble keeping it gelled up though. It keeps turning into liquid.

  126. sharron willies

    Hi, I’m in the UK and we can only get Knights castile soap would this work the same ? I would love to have a go at making this 😀

  127. Mary C

    I did this and by the end of the day, it was not quite a solid but almost rubbery. How can I get it to stay a liquid?

  128. Irene

    I have read and re-read the recipe for this and cannot see what I did wrong. I used Kirks 4 oz soap bar.

    Your images in the recipe page shows that the initial batch should thicken but mine never did. Its really runny. Even more so when I did the dilution/add coconut oil, product. Both products separate immediately. My liquid soap is very thin-unusable with a scrungie because it drips through so fast.

    I have not had your results with cleaning either. The only thing I have found it useful for is hand washing in a foam making bottle.

    Any suggestions?

  129. Kelsi

    Irene…that’s really weird….hmmm. If you followed the recipe, don’t let the consistency freak you out or worry you. It will still be a concentrate in function (similar to a bottle of Dr. Bronner’s) but depending on the temperature in your home and the make-up of your water (hard vs. soft, mineral content, etc) it will greatly impact your soap’s appearance (and even efficacy). I’d try sticking it in the fridge if you want it to gel a bit, and see if that makes a difference. As frustrating as it is, the water you use plays a big part and it’s kind of like how certain people SWEAR by a particular detergent but others hate it – a lot of that has to do with your water.

  130. Kelsi

    I’d keep it somewhere warm – on the top of the fridge, on the dryer, top shelf of the closet maybe. It’s fickle when it comes to temperature, so someplace warm will keep it from gelling too much.

  131. Kelsi

    Sharron, Any castile soap should work fine, (as long as the bar size is comparable) but that’s not one I’ve personally tried. If you have success, let us know!

  132. Kelsi

    Cheyenne, If it is too liquidy, you might need to keep it someplace cooler, or cut back on the water. If you have softer water, it tends to be runnier and even though it should still work, it’s hard to use. I’ve had comments from people saying it constantly gels and then others getting a watery consistency. A huge factor is your water make-up (city/country, purified, mineral content, chlorine content, etc….).

  133. Ashley

    Although I think this could be a good use for detergents and hand soaps and such, true liquid castrile oil uses no water, just different organic oils. I did use this base for a homemade bodywash I was trying, and it seems to work well, but I know the shelf life of the bodywash is much shorter now. Thank you for the recipe, although I think I’m going to experiment with my own organic oils and see if I can come up with a thicker base recipe.

  134. Kelsi

    Ashley – you’re right. True Castile soap doesn’t have water added in; this recipe is just to make it more frugal and to help it go farther as a liquid (since regular castile is obviously solid at room temperature). I don’t typically use castile soap in my body washes, although you definitely can; I prefer it for normal cleaning. Also, if you like a thicker substance, you can add in glycerin.

  135. KIRK’s coco soap is TERRIBLE to make what people think of as liquid soap.
    I wanted a thick soap, it’s impossible to get with coconut soap though, at least this brand.

    I’ve had success in the past with real castille soap, meaning with olive oil as a base.
    If you want runny liquid definitely go for coconut based soap.

    Also, the lather is almost inexistant with this soap. An dI triple and quadrupled the concentration, same results. Just a terribly bad soap for anything liquid. I hope my experiments with this save you some time. GO FOR OLIVE OIL BASED SOAP.

  136. Cassandra

    I just did this about 6 hours agoti come home to abb almost solid mason jar of soap? What went wrong?

  137. Kelsi

    Cassandra – check out some of the other comments – there are a few variables – temperature or the quality of water used can affect the consistency, but it will still work fine!

  138. Melissa

    Will this soap harden up like coconut oils? Or will it remain liquid in cold weather?

  139. Lisa Nuckols

    Nice article. Traditional true Castile soap only includes olive oil, lye, and water though. You can buy amazing handmade Castile soap from artisans and soapmakers on etsy or at your local farmers market for $3-5 each and help out a crafter. 😉

  140. Abby

    In the country where I live, it’s not only difficult to access pure castile soap, it’s also more expensive. I have, however, found “baby castile” here in a pharmacy. It has a few extra chemicals but it’s only $0.79/bar. Is there any reason this wouldn’t work the same?

  141. Melissa – it won’t actually solidify, but it may separate and gel a bit. You can put it in a warm spot, or just give it a good shake, but it will still work great!

  142. $.79 seems like a great deal, and is just slightly cheaper than Kirks. I would guess that it should work, and the fact that it says “baby castile” most likely means it has a certain fragrance or is possibly for sensitive skin…? I’d give it a shot!

  143. Melissa

    Just had it “gel” a little I actually like it better now

  144. You asked, “What can I do to get this Kirk’s soap to make better bubbles in the bath?” Really only 1 thing: Have less water “hardness” for it to react with. There’s 2 ways you can achieve that: “Soften” the water, or use less water.

    There are various ways you can “soften” the water, by which is not mean literally making it softer, because ice is the only truly hard water, but taking out or tying up calcium and certain other minerals. The simplest is simply to use more soap, but that could be an awful lot for a bathtub full of water. Although people have done that with soap powder or flakes, bath water that’s soapy enough with real soap to have heaps of suds on top is going to be more defatting and irritating than is using the relatively small amount of baby shampoo you’ve been using.

    The other way is to mix less water with the soap, making suds in a small volume of water by any of various means and then putting them on your child while he bathes, without mixing it with the rest of the water. The ways of making suds mostly involve blowing air thru a bunch of small openings wet with soapy water, such as the spaces between the threads of a cloth. That’s done with a large baglike cloth in a Turkish bath by squeezing the air thru, but you can also use a regular washcloth by blowing while it’s draped around your mouth in such a way that air can’t escape anywhere but thru the cloth. Kirk’s is great for making the foam, but also for making the skin sore around your mouth where you have to press the washcloth to do this repeatedly if you want to provide heaps of bubbles for your child.

  145. Teresa

    I’m so happy I found this! I googled how to melt Castile soap this morning and your blog was the first one to pop up. I totally agree with you about Dr B’s soaps…so much mumble jumble that it creeped me out, so I just returned it back to the store I bought it from! 🙂

  146. Andee

    Oh thank goodness this was easy! I knew there was some simple way to just make my bars into liquid. Other people make it a huge dramatic experience! Thank you so much!

  147. Melissa

    Do you think this will work in a foam soap dispenser?

  148. Huxley

    Thanks so much for the tips! This is also a great simple way to get the liquid version AND eliminate the plastic. Havin’ my cake and eatin’ it too.

  149. Lori Johnson

    Oooohhh!!! Ahhhhh!! I see this post is a couple years old but I just came upon it on Pinterest and I just have to say ~~ THANK YOU!! I too love the Castile liquid but who can afford gallons of that stuff lol ~ I’ll share this with friends! Thanks!

  150. Michele

    I made the liquid soap with the Kirks bar and 2 3/4 cup of water but I only ended up with 3 cups of liquid soap…Is this right? Your mason jar was much fuller than mine so I’m confused. Do you always measure the water or do you just (gasp) wing is sometimes? Lol. Thanks for the recipe! I’m looking forward to trying your laundry soap recipe too as I have never had great luck with that other recipe that is everywhere.

  151. Ri

    I followed all the steps correctly, but after sitting for a few hours, it turned solid again. Not nearly as solid as before, but it had the texture of jello almost. Is this normal ?

  152. yep – totally normal. The oils that you’re working with in the soap are solid at room temperature, so as it cools, it will solidify a bit. If you place it in a warm spot, it will liquefy again.

  153. You did it right – I sometimes add water at the end to bring it to a quart. I don’t always pay attention when I’m heating the water (eek) and sometimes it evaporates and boils down more than I intend. In general, you should end up with right around 4 cups of liquid soap, so I fudge it once it’s melted in order to get that amount/dilution. It’s what Iv’e found to be the most comparable to store-bought liquid castile.

  154. TheInspirefly

    Hey, lovely!
    I just found this, and I am inspired! One question, though — have you ever tried this with Kirk’s aloe vera castile soap? It’s not make with coconut oil, so I’m hoping that it would stay liquid, even in the cold…what do you think?
    The ingredients for Kirk’s aloe vera castile soap are: Sodium Cocoate, Water, Glycerin, Aloe Barbadensis Leaf Juice, Sodium Chloride, Fragrance, Sodium Gluconate, Sodium Copper Chlorophyllin.
    Do you think it would be as effective as a cleanser as the other soaps? Sorry if these seem like dumb questions — I’m new to all of this!
    Thank you!

  155. Thanks for stopping in! I’ve never actually tried it with the aloe version. I’d be a little hesitant, not because I think that it would turn out funny, but because the only purpose of aloe is to moisturize and heal skin. It’s not actually a cleaning agent. I’ve never seen the aloe version in any local stores (I’m in northern Indiana) so I’ve never tried it. If it were me, I’d use it, but just for body cleaning – body wash, hand soap, even shampoo – and use the regular Kirks for household things. If you try it, let me know how it goes!

  156. Enjoyed reading this… especially the little blurb about the cutting board! (a real person woo hoo!!)

    We just gave it a try. We are going to put it in another bottle to be able to use it a little easier.

    Thanks! David and Lorretta

  157. Does adding coconut oil for conditioner harden up, or stay liquid after initial heating and adding to the liquid heated Castile soap mix?

  158. Kaitlyn

    Does this stay a liquid the whole time? I have seen a lot of people posting similar ideas but theirs turns to jelly….. I am betting it has to do with the brand name. I am new to all of this and just recently made all natural laundry soap and this was my bar soap of choice, you can’t beat the price! I want to make a shampoo that needs liquid castile soap but can’t see spending 15 dollars on a bottle if I do not have to. Thank you in advance and I hope to see a response soon!

  159. Kaitlyn

    This is ironic as I live in Warren PA and am from Jamestown NY…..I didn’t expect to see someone so close to me commenting on this article!

  160. Kaitlyn

    Distilled water would also be a good option.

  161. Kaitlyn – actually, the consistency has more to do with temperature and water. Distilled is always a great option, esp if you don’t plan to go through this very quickly and want to store it for awhile. Otherwise, it can separate or get jelly-ish, but it’s not going to get firm – there’s too much water to soap. If you store it someplace cool, it may gel a bit but just need a good shake and you’ll be all set.

  162. Sweet. That is so much cheaper than Dr. Bronners. And I know what you mean about the writing on the bottle… kinda weird. :/

    Thank you so much for sharing this at Savoring Saturdays, Kelsi!

  163. vicki

    I make my own Castille soap from 100% olive oil. It is a lovely, soft soap that is gentle on my sensitive skin. Your recipe to change my bar to a liquid sounds so easy. then can’t wait to make homemade shampoo form the liquid soap! Thank you!

  164. chiane

    I haven’t made this yet, but if you wanted to add coconut oil. The fractionated kind stays liquid at all temperatures.

  165. chiane

    Vitamin e oil will help preserve it too!

  166. Thank you for posting this! I’ve been trying to figure out a recipe for my Kirk’s bars and this was it!

  167. Kathleen

    How many ounces does one bar make?

  168. I use a quart sized mason jar, so 32 oz

  169. Ruth

    I did the bar in a bag and squeezed every day. But it keeps going back to a semi solid state. If I put it in hot water it goes back to liquid, but after 2-3 days it sets up again. Should I have used distilled water?

  170. Cayley

    (The link in this article to your laundry soap doesn’t work.)

    So one bar to 2 3/4 cups water… that can be used in any recipe that calls for Dr. Broners Liquid soap? I’m confused about whether yours is concentrated and needs diluted…. Can it be a straight up substitution or no?

  171. I did this and it ended up turning to a jelly like substance after a week or so…any suggestions?

  172. The consistency will change with the temperature. If you don’t like it thicker, then just set it somewhere warm – the oils will start to liquify and it will be back to “normal”.
    hope that helps!

  173. thanks for letting me know about the link – I will fix it!
    And no, not actually concentrated, but comparable to any store-bought strength.
    hope that helps!

  174. Because the base of the soap is oil, if it cools, it will start to gel up and thicken. To keep it liquid, just store it someplace warm.

  175. Marie Nelson

    I shred the bar & it melts almost instantly. Yes the product is still just as good if it has to be stirred back together.

  176. Marie Nelson

    It doesn’t go bad in my experience. There are just too many ways to use it.

  177. I tried doing this exactly as you wrote it and it didn’t work. The soap didn’t melt and the water just became soapy…but not liquid soap. More like soapy water. What did I do wrong and what should I do?

  178. Rachel, as long as you added the right amounts, you’re fine. As it cools, it will solidify slightly, so that it’s more like liquid soap. Thankfully, if you followed the directions, it’s pretty fool proof, so you’re ok!

  179. Why do other websites use KOH, etc for their liquid castile soap reciples? What would be the usage/functionality differences?

  180. Why do other websites use KOH, etc in their liquid castile soap recipes? What would be the usage/functionality differences?

  181. Lynn

    I have been making a wonderful Castile soap shampoo mentioned on another website. It calls for 1/2 cup liquid castile soap (Dr. Bonner’s) and 1/2 cup coconut milk, and peppermint essential oils if using the plain Dr. Bonner’s.
    It works so well for fine hair, building volume! However, the Dr. Bonner’s has started to break my scalp out and it feels itchy! So, I am hoping your ratio of water to castile soap bar is not too thick
    to make this shampoo as I want to start from scratch and make my own liquid soap, avoiding Dr. Bonner’s cost and effect. I would love to hear other’s recommended ratio, maybe 1 quart of water to 1 bar of soap for this? Thanks!

  182. Cindi

    I did this but only used one bar. Do you use all three? Mine wasn’t milky colored like yours. It was clear. Thanks.

  183. I just tried this lovely recipe, but instead of chopping it I had grated it in a cheese grater. Now the outcome is different, and my liquid is clear, and not anywhere near a soap consistency. I was wondering if maybe I should wait more time? Or try again

  184. Donna M. Crowe

    My liquid so keep separating any suggestions?

  185. June

    Great instructions! Do you think this would work with the Kirk’s fragrance-free soap bars that come in the blue-ish packaging?

  186. it should – I’ve never tried, but I don’t see why not, and fragrance free is definitely preferable

  187. Worked perfect! Thank you so much. What is the dilution rate?

  188. Thanks for the recipe. Mine came out perfectly and I live in the currently frozen tundra of the Midwest. I did add the vegetable glycerin (2T) and used all three bars in three mason jars. I didn’t let it cool down and when I put the lids on, two of the three popped so I guess I have canned liquid Castile soap. Sill liquid and beautiful if I do say so myself. I hope the “canning” process helps to preserve it. 🙂

  189. that’s awesome!! lol! Let me know how it goes – I’m guessing it’ll keep for a long time now!

  190. Melissa, youll treat this as you would a store bought bottle of liquid castile. If it helps give you an idea, I make a counter top spray using 16oz of water, 1 Tb of liquid castile, and essential oils.

  191. Katie

    Do you use one or two bars of soap for this?

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