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Making soap in a crock pot is an easy way to use the “hot process” method. This method of soap making is also referred to as crock pot hot process, or in short, cphp.

This how-to tutorial outlines my steps for making crock pot soap and assumes you are familiar with the soapmaking process.

Start with a good recipe (Soap Recipes). I prefer recipes that have a higher amount of liquid oil to solids. One of my favorite recipes is very simple: 60% Olive Oil, 20% Palm Kernel Oil, 20% Palm Oil. Run it through a lye calculator to determine the amount of lye and [distilled] water needed. I do not discount my water when making hot process. One of my favorite recipes is at the end of these instructions, with more dispersed throughout Momma Muse - a simple search should yield results.

I use a 6 1/2 quart crock pot. A 4 pound batch of soaps fits perfectly. It fills the crock pot about half full - giving room in the case of it bubbling up, but not too little an amount that it could burn.

First, measure cold water and set aside.

Then measure the lye into a separate container. Slowly pour the lye into the pitcher of cold water. Stir until dissolved. Set aside in a safe place.

Once I have my lye mixture set aside, I measure my solid oils. These can be put into the crock pot to be melted. But, it takes longer this way, so I generally put them into the microwave for a couple minutes until melted and then pour into the crock pot.

At this point, my crock pot is on low.

I recommend using a good rubber spatula to scrape the bowl - no sense leaving any good oils behind.

Next, I measure my olive oil - and/or any other liquid oils I happen to be using - and pour this into the crock pot.

Get out your handy-dandy stick-blender and using low speed, slowly pour the lye mixture into the melted oils. Gently move the stick-blender around, up, down, around, ensuring a nice even blend. If you don’t have a stick-blender, a stainless steel wire whisk works great too - just requires a little more arm power, and of course, will take longer.

Once it has reached ‘trace’, I put the lid on the crock pot and turn the heat setting up to high. However, the first few times I made crock pot soap, I left it on low until I was confident in how it worked (both the soap AND my crock pot).

Now while it is cooking, I ready my mold, measure out any fragrance oils or essential oils and any additives I plan to use.

After about 15 or 20 minutes, I take the lid off and, using a potato masher, mash the soap around. It has a look of a vaseline texture; glossy, slick. It will have a waxy feel if you rub a piece of it between gloved fingers.

Add your additives, colorants, herbs, etc and mix well using the potato masher. Once that is blended fairly well, add your fragrance and mix again.

It is done! At this point, it’s really soap. It only needs to be put into your mold. I do this in large spoonfuls, pounding my mold on the counter every few scoops to ensure it packs into the mold tightly. Once I have it all in the mold, I put a baggie on my hand and flatten the top - making sure to “squish” it into the corners really well.

Now is a good time to wash all the dishes. And you don’t even need to add any soap! You should see some lovely lather from the soap you’ve just made.

I let this sit over-night. The next morning, I unmold and slice into bars to air out for a week or so. Once each bar has had time to harden, I bevel each one and it’s ready for use, or sale.

My favorite crock pot soap recipe:
Rosemary Mint Handmade Soap
4 pounds
- 38 ounces olive oil (59.38%)
- 14.4 ounces palm kernel oil (22.5%)
- 11.6 ounces palm oil (18.13%)
- 8.7 ounces sodium hydroxide (5% discount)
- 17.5 ounces distilled water
- 3 ounces rosemary mint blend essential oils
- 2 teabags of Organic Peppermint tea

A search of Momma Muse will provide other soap making recipes which may be used for cold process soap, hot process soap, or crock pot soap. Soap Recipes

Note: Sodium Hydroxide is highly caustic and should be handled carefully and knowledgeably. It is the soapmakers responsibility to research safety procedures for soapmaking.


Copyright (c) 2006 Judi Cox.

Judi Cox is a work at home mom living in the Ohio Valley with her husband and 4 children. Judi’s interests include working websites (two of her websites http://www.momslittlegarden.com and http://www.mommamuse.com). She enjoys gardening for fun and for the birds, playing with the kids, reading, and promoting other mom businesses.

You will find this and more of my articles listed on Google Base - Judi Cox.

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6 Responses for "Instructions for Making Crock Pot Handmade Soap"

  1. chudy July 30th, 2006 at 4:46 pm

    Good day to u and i am quite impressed on yr soap tutorial.I have been making soap for a while now and have virtually tried out the differents methods and one more thing that bothers me now is how i can increase my bulk production when making soap in small scale for sale without affcting quality.
    wOULD U PS TELL ME HW TO DO THIS,I intend to increase my quantity cause the cost of purchasing oil is really high.I use more of P.K.O and palm oil for my receipe for Laundary soap.
    thanks a lot.
    Chudy

  2. Anne October 4th, 2006 at 7:57 pm

    Is it possible to overcook crockpot Soap? If so, is it a fine line between done and overdone? My soap looks so wet, I feel it should cook longer, but I do not want to ruin the batch…
    Thanks,
    Anne

  3. Judi October 5th, 2006 at 4:20 pm

    Chudy

    Glad my soap tutorial was helpful. It’s very simple to increase your bulk production by increasing your recipe (remember to check it with a soap calculator) and making sure your mold (or molds) are able to accomodate the increased ingredients. Cut and package as usual.

    Buying bulk oils is almost always less expensive than purchasing in smaller quantities. Another option to consider is finding another local (to you) soapmaker who would be willing to split the cost of different oils, fragrances, etc.

  4. Judi October 5th, 2006 at 4:24 pm

    Anne,

    Once the soap has that translucent look and rolling some around your fingers feels “waxy”, you can add your additives and put it in the mold.

    I notice when mine has reached this point, the peaks (when mashing it around) tend to turn white, like they are cooling and drying. This usually signifies “Done” to me. I mold it quickly if I get to that point so it still has a smooth texture once cut.

    Hope your soap turned out lovely!

  5. JOJO December 11th, 2006 at 2:09 pm

    Hi, I found your tutorial through Google, and I am making my 2nd HPCP batch just now. I really feel the need to let you know how much I love your recipe. It is awesome!! I added dark brown sugar, cinnamon and powdered ginger as my additives. The whole time while I was mashing the soap, the sweet smell from the soap tickles my sweet teeth.

  6. Diane July 27th, 2007 at 11:08 pm

    Hi,
    I would like to try your recipe Rosemary Mint Handmade Soap. Since I do not have palm kernel oil. What can I use to substitute? I have coconut oil.

    Thank You
    Diane


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