How To Make Homemade Soap In A Crockpot {A Photo Tutorial}

make your own bar soap

This post has been a year and a half in the making. I hope you’ll be as excited about it as I am! ;-)

Ever since I started blogging and making my own homemade versions of household products I have wanted to try making SOAP! But I was completely intimidated by the whole process. First of all it involved MATH, which is NOT my strong suit. (OK…it’s not much math…but still). Then there were the “special ingredients” and finally, the “special equipment” needed. Well, I finally decided to tackle all my excuses for not making soap and when I did, lo and behold, it was probably one of the EASIER things I’ve done! That’ll teach me! (Probably not, but I can hope.)

Let me first dispel some of the silly notions I had about the soap-making process:


1.) Math. It turns out there are actually online soap CALCULATORS that do all the math for you! How cool is THAT?  I really should have known. You really can find ANYTHING on the www nowadays. You will need to know some simple addition, but I believe in you!


2.) “Special ingredients”.  Would you believe me if I told you I already had all but one of the ingredients I needed in my kitchen already? Well, you soapmakers will, but I’m talking to the rest of you. There were literally only 4 ingredients in the soap I made, INCLUDING the water! Olive oil, coconut oil, lye and water.  Oh, and essential oil for scent if you like (but that’s optional, so it doesn’t count.)

make your own bar soap

3.) “Special equipment”.  I may have been the only person on the planet who didn’t own a stick blender before last week.  Every time I tell someone about my soap-making exploits I ask them if they have a stick blender and EVERYONE has said…”Sure!”  So I guess it’s not that SPECIAL of a special piece of equipment, but it was to me, until now. I bought an inexpensive Oster Immersion Blender at the grocery store for $24.99 and while I was there I picked up the other piece of “special equipment” I needed…a scale. Now, I used to have a scale, but for the life of me I can’t remember what became of it. This one also set me back $24.99, but I probably could have gotten away with a less expensive model. I chose THIS one because….are you ready for this???….they were BUY ONE, GET ONE FREE! :-)  You know what that means!!  One lucky reader is going to get a scale and an immersion blender to make their own soap! (More info at the end of the post.)

OK…now that I’ve dispelled some of the “myths” of soap-making….let’s get down to it, shall we?

I have to start by PROFUSELY thanking Angela at Living From Scratch for her tutorial. It was after reading through her careful, clear and complete tutorial that I finally felt like I could DO THIS THING! So THANK YOU Angela!


Oh, I forgot to mention, there is one more fairly important piece of equipment that is needed for this particular soap-making endeavor….a crockpot.  But I’m guessing the VAST majority of you already have one of those. If you don’t, run down to the local thrift store…I bet you’ll find one there for cheap!

First thing you have to do if you want to make soap is find a recipe. I decided to make Hot Process Soap (vs. Cold Process) because I wanted to get in touch with my roots and that’s how soap has been made for centuries! Not really…I decided on HP soap because it cures much faster than Cold Process and I’m a very impatient person. :-)  How’s that for honesty!?

You can approach this a couple of different ways. You can find a recipe online (just Google or Bing it and you’ll find a gazillion!) or you can use an online soap CALCULATOR. Basically you tell the calculator what type of oils you want to use in your soap (it lists pretty much any oil you can THINK of!) and it spits out the oil and lye measurements for you!  It’s pretty slick. It took me a little while to figure it out….but once I got it…I was convinced I will be making more soap using this thing. :-)

soap calculator

So following Angela’s lead…I decided on an 80% olive oil and 20% coconut oil mix for my soap. I also wanted to try just a small batch at first…so I put 16 ounces in the calculator for the weight of the oil I would be using…and like MAGIC it came up with my “recipe”.

  • 12.8 ounces Olive oil
  • 3.2 ounces Coconut oil
  • 6.0 ounces Water
  • 2.2 ounces Lye

Are you beginning to see why the SCALE is so important? The scale made this a CINCH.

Place your bowl on the scale (and this is where a TINY bit of math comes in…but if *I* can do it…*you* can do it!) and then add the amount of olive oil needed to the weight of the bowl. So my bowl was 35.4 ounces. I needed to add 12.8 ounces of olive oil. Adding the two numbers together I got 48.2. So all I had to do was pour in the olive oil until the scale reached that number.

make your own bar soap

make your own bar soap

make your own bar soap


Then do the same thing with the coconut oil. It was actually kind of FUN channeling my inner mad scientist. ;-)

Pour the oils into your crockpot set on Low.

make your own bar soap

After you have measured/weighed your oils, it’s time to add the water and lye. Lye was one of those “special ingredients” I talked about before….and I won’t lie….it’s not EASY to find. BUT, all I had to do was ask the nice gentleman at our local hardware store to order me some and I had it in my hot little hands two days later. It’s used as a drain cleaner, so you will want to look for it in the plumbing section. This is what my container looked like. You just need to make sure it’s labeled as 100% lye, NaOH.

make your own bar soap

Since it IS a drain cleaner…you can imagine how CAUSTIC it can be. It can burn skin on contact and is fatal if ingested, so you must handle with extreme care. I didn’t use any special protective gear, but I was extremely careful not to come in contact with it and made sure the area was well ventilated while pouring and mixing it. Once it’s added to the oil however, you don’t smell it at all.

If you are concerned about working with lye you can avoid it by purchasing melt and pour soap base at a craft store. That way all the lye-handling has been done for you. :-)

make your own bar soap

So, next step. Measure your water into a heat proof glass container and then add your lye to the water. IN THAT ORDER. Adding water to the lye will result in an unfortunate volcanic reaction. Stir until the lye is completely dissolved. This part gives off some pretty strong fumes, so be careful and make sure you got some ventilation going!

make your own bar soap

make your own bar soap

Next step…pour the water and lye mixture into the crockpot with the oils. Time to get out that stick blender I’ve been dying to use! ;-)  Mix until smooth and slightly thickened.

Put the cover on your crockpot (still set on Low) and wait 30 minutes.

make your own bar soap

After 30 minutes, it should just be starting to get thick around the edges, but runny in the middle. You can see from the pictures, the progression after that is fairly rapid. By one hour you should be to the point where you can turn off the crockpot, give the mixture a stir and add any fragrance if you so desire. *I* so desired!

make your own bar soap

So I added the first thing that came to my head…one of my favorite combinations….Lavender and Lemon.  I totally GUESSED on this step and added approximately 10 drops of each. I must have had beginner’s luck on my side because the soap turned out to have just the right amount of scent for me!  Not too much…just enough.

make your own bar soap

Now all that’s left to do is pour it into a mold (I used a ratty old plastic container I had lying around) and wait.

make your own bar soap


make your own bar soap


make your own bar soap

Mine had hardened enough overnight to unmold and cut. The soap will actually continue to harden for another week or two, so cutting it right after taking out of the mold is recommended. I easily cut mine into small bars with a large kitchen knife.

make your own bar soap

I can’t tell you how much I enjoyed this project….from beginning to end!  There’s just something about making your own SOAP that is incredibly satisfying. I keep a little bar of it on my kitchen sink at all times…a) because it feels and smells wonderful! and b) because it makes me smile!

I know this was a LENGTHY post…but I hope some of the enthusiasm I had for this came through. If you’re thinking you might want to give this whole soap-making thing a try…make sure and enter to win the digital scale and immersion blender giveaway!


Congratulations to Amy Smith!

Screen Shot 2013-01-28 at 9.35.56 PM

Here’s how to enter to win:

All you need to do is leave a comment on this post sharing what homemade products YOU like to make (or if you don’t make any…YET…share what you would LIKE to learn how to make!)

You can also increase your chances with these BONUS ENTRIES:

1. Follow JillsGoodThings on Instagram. Leave a separate comment letting me know.

2. Join One Good Thing By Jillee on Facebook. Leave a separate comment letting me know.

3. Follow @JillsGoodThings on Twitter. Leave a separate comment letting me know.

4. Become a registered member of the One Good Thing By Jillee Forum! Leave a separate comment letting me know.

Winner must be 16 years or older and will be randomly selected and announced Monday, January 28th. The giveaway is only open to US residents. Be sure a valid email address is included with your comment(s). The winner will have 72 hours to claim their prize or another winner will be chosen.



Enjoy This Post? Never Miss Another!

Subscribe to Jillee's FREE email newsletter and receive more great tips and ideas!



      • Julie says

        I like to make my foaming hand soap by the gallon so I don’t have to make so often. Empty vinegar jugs are perfect for my cleaning solutions. After much trial & error my favorite formula is:

        2 oz. glycerin (brown bottle of liquid on the first aid row of any pharmacy)
        1.75 cups liquid soap
        14 c. water

        I add the water to my jug first, then the other ingredients & give it a gentle shake to mix it up when it’s first made. Foams perfectly & the added glycerin keeps my skin from getting too dried out.

  1. says

    I’m actually going to try this. Favorite recipe? The powdered concentrated laundry detergent. It cleans well and it seems to remove any laundry odor you subject to it. Favorite idea? Oh the frig makeover with the nifty baskets. I saw it and I MUST have it, but have to wait until I find enough of the baskets. I had total frig envy! Soon, soon!

  2. Kate in NY says

    I love to make dryer balls, deodorizing disks, laundry detergent and make my own softener using Purex crystals and vinegar. I share your love for vinegar. Not many messes CAN’T be solved with a little dish soap, hot water & vinegar! Thanks for all your great posts. I have a new hobby that provides useful & thrifty gifts! :)

  3. Kassel Taeza says

    I LOVE making the homemade laundry detergent that I got from you. Gave my mom and my mentor a sample and they LOVED it! We’re never going back to expensive detergent again. I look forward to being able to make my own soap. How cool would that be?! I don’t have a blender and a scale SO…*crossing my fingers tightly*

  4. Kassel Taeza says

    I LOVE making the homemade laundry detergent that I got from you. Gave my mom and my mentor a sample and they LOVED it! We’re never going back to expensive detergent again. I look forward to being able to make my own soap. How cool would that be?! I don’t have a blender and a scale SO…*crossing my fingers tightly*


  5. jen says

    Jillee – there is a way to place a bowl on the scale and then ZERO it back out then measure your ingredients. not sure exactly how to tell you with the scale you purchased but check the instructions.

      • Deborah Bates says

        All you have to do is set your bowl on the scale before you turn it on. The scale senses the weight of the bowl on the scale and automatically cancels out the weight of the bowl. When you turn the scale on, it automatically is at zero so when you add your items to be weighed then you get the true weight of the item without having to do any math :-)

        Also, make sure you don’t leave anything setting on your scale when you’re not using it otherwise it will drain your batteries.

        • flerbiejean says

          On my digital scale, I could turn it on first, put my container on it and then push both buttons on the front of the digital scale to “zero it out.” Perhaps, Jillee, your scale will work in that same way.

          • Catherine's Not naturally Crafty says

            Jillee and all: yes, tare is the magical function. Usually, if you scale doesn’t automatically tare when you turn it on and if there isn’t a separate function button, you can get it to tare by:

            Pushing both the two buttons simultaneously.

            The process for soap would go like this:
            1. put the bowl on the scale and push tare/both buttons to get it to go to 0.0
            put in the olive oil to the right measurement.
            2. push the tare button/combo again to get to 0.0 then add the next ingredient.
            3. repeat until everything is added.

            Now, be aware your maximum weight may go over if you use a heavy glass bowl. like the one you use. I generally use a plastic bowl or Tupperware type container to measure on the scale.

  6. jen says

    I have 7 kids still at home and WE (yep the kids) LOVE making our own laundry soap.
    the kids tell everyone how to do it and have given demonstrations at school during required assignments on how to make something on how to make laundry soap, make homemade baby food, dishwasher soap, and fabric softner.
    Even while at the store I have caught my kids sharing their experiences on making homemade laundry soap. They tell people in the soap isle how much they can save by making their own.

    • Joanna Burkhart says

      I have 6 kids myself and have been looking for ways to make homemade cleaning products. I’ve been making my own face cream for years now cuz the store bought stuff burns my face and I also have to use organic shampoo or my scalp burns and itches for months after one use. I have looked at about everything on here and I’m going to be making a lot of these recipes and sharing them with my family. Thank you so much.

  7. Brenda C says

    Since I started following you on FB I have pinned a ton of your receipes. The powdered concentrated laundry detergent is great. I will be trying the soap receipe soon. Thanks for all the good things.

  8. Hilde says

    Oh I am sooo going to try this, I am in Australia so am not worried about winning, to expensive to post, plus we have a different electrical outlet, just wanted to let you know that I have been following you for a while now, found you on pinterest, love all of your postings. I have been wanting it make my own soap for ages as well. Making my own foundations and eyeshadow is next. Thanks so much for all of your wonderful info, blessings Hilde

  9. Jillian says

    I love to make my own soap at home. I usually make a couple batches a year, with enough for our family and plenty to give to friends. My most recent batch used up a lot of the oils I had sitting around – shea butter, castor oil, coconut oil, a little beeswax, etc. The batch before was coconut oil, olive oil, shea butter, and coconut milk. Smelled so yummy!

    • Jean says

      I am sitting here reading all the comments after Jillie’s post on making soap and saw your’s, my skin and 2 of my GK’s are so sensitive that I wondered if you would give me your recipe using the batch you were talking about that used coconut oil, olive oil, shea butter, and coconut milk? It sounds wonderfully smooth and creamy and I think it would be perfect for me to try. I have never tried making soap, I have done Jillie’s laundry soap and love it.
      Thank you so much, Jean

  10. Justine says

    So is it safe to use your crockpot and stick blender for cooking purposes after making this? The lye scares me. I have ALL these things in my kitchen right now. I’m so inspired! Thanks for making it so simple.

  11. Raelara says

    I make my own body butter, chap stick, deodorant, and Vicks Vapo-rub. I’m also experimenting with home-made orange cleaner. Most of it has been born of necessity as I cannot use any product that contains any form of petrochemicals. But I must admit that homemade products are often worlds above commercial chemicals in performance!

    I follow One Good Thing by Jillee on Facebook.

  12. Pam (PeeJay) says

    Just to say that I have scales that I can zero – in fact, all the scales I’ve had could be zero’d – so there’s no need to have to do any addition when adding ingredients. Just zero when bowl is put onto scale and then zero after each ingredient is added. It’s normally done by pressing and holding the oz/g button. Try it on yours … it may work and makes life so much easier :) I’m UK based so not in running for your giveaways but have them anyway. I use the stick blender to blend homemade soups and we in the UK use scales for cooking measurements whereas you use cups :)


Leave a Comment

Your email address will not be published. Required fields are marked *