Cold Process Soap: Half and Half Method with Soy Milk


Hydrated soybeans on top and dehydrated soybeans on the bottom.

Ready for part 4 of milk cold process soap? We are going to follow the same recipe and steps as the posts before, but we are going to use Soy Milk instead. I made fresh Soy Milk using the SoyaPower Plus Soy Milk Maker.

Oils ready for to be melted.

Again, here are the directions that we will follow in a step by step format.

1) Calculate the amount of lye and liquid needed for the oils you plan to use.

2) Measure all of the oils and set aside to heat gently.

Adding lye to the water.

3) Measure the lye and set aside.

4) Measure HALF of the needed liquid as water and set aside. Measure HALF of the needed liquid as milk and set aside. Milk should be room temperature, not frozen or heated.

Mixing the lye solution.

5) Add ALL of the lye to the water. Stir well. No crystals should remain on the bottom of your mixing vessel. When the temperature of this lye solution is within 110° F to 130° F, (cooler in the summer and warmer in the winter, cooler for large batches and warmer for small batches), add it to the oil mixture. Blend with an immersion blender until you estimate you are halfway through the mixing process. This will happen with most oils in about 1 minute. The mixture should NOT be thick or viscous. The mixture should be very fluid, like water.

Adding the lye solution to the melted oils.

6) Now steadily pour the milk into the batch. Use the immersion blender to finish the blending so there is no chance of separation.

7) Add fragrance. Pour into prepared SHALLOW molds (1 inch deep or so). Milk soaps can get very hot and shallow molds help the excess heat dump into the air. This will prevent the milk sugars from interrupting the saponification reaction.

This is called the Half and Half Method, because you use half water, half milk, and add the milk half way through the blending of the batch.

Collect needed items:

Ingredients
Hydrogenated Soybean Oil
Coconut Oil
Olive Oil
Sodium Hydroxide
Soy Milk
Water
Equipment
Scale
Soap Spoon
Gloves
Extra Large Square Tray Mold
Square Tray Mold
Immersion Blender
Time spent:
Weighing time: 8 minutes
Adding lye to water: 15 seconds, followed by 60 seconds of stirring
Heating of oils time: 3 minutes
Pouring lye solution into the fat mixture: 10 seconds
Using immersion blender to mix soap solution: 90 seconds
Adding milk to the batch: 20 seconds
Using immersion blender to completely mix milk into soap: 40 seconds
Pour into molds: 60 seconds
Allow soap to rest: 24 hours
Recipe in ounces:
40 ounces weight Hydrogenated Soybean Oil
20 ounces weight Coconut Oil
20 ounces weight Olive Oil

11.1 ounces Sodium Hydroxide
15 fluid ounces Soy Milk
15 fluid ounces Water

We only have Almond Milk left! Don’t forget to give me your guesses on the final colors of the soaps! We will see a cut soap comparison on Monday!

Don’t forget to submit your blog or video posts to win the MMS Perfumer’s Kit. Remember, this kit is worth $280! Submissions are due by March 1st for posts during February.

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Mixing the batch to halfway to trace.

Adding milk to the batch.

Filling the second mold.

The batch is ready for the milk to be added.

Beginning to pour the batch into the mold.

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About Andee

I'm a twenty something soap snob. I've grown up with hand made soaps and I love them! I really like making lotions, soaps and perfumes. I adore mixing scents to come up with something new. My favorite scent is either Wicked or Cotton Candy. I tend to hoard fragrances, I even have an Earl Grey Tea from the MMS catalog. I won't tell you how old it is, but it sure is good!

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