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Is Creamy Lightly Colored Hot Process Goat’s Milk Soap Possible?

Think goat’s milk is just for cold process soapmaking? Think again! Today, we’re diving into how to make a creamy hot process goat’s milk soap!

I adore goat’s milk as an ingredient in soaps: the sugar adds wonderful bubbles to the lather and the cream is a skin-softening moisturizer. Goat’s milk also adds a ton of label appeal in some markets.

When I first started making goat’s milk soap, I was using the cold process method of soapmaking, which means I often froze the goat’s milk in cubes and added the lye slowly to the frozen goat’s milk. (Similar to how Veronica rocked it in this Goat’s Milk, Honey and Avocado Oil Soap Tutorial!)

One of the reasons I ended up switching to hot process soapmaking is that cold process soapmaking with this method is not terribly efficient! (I love efficiency!)

goats-milk-from-goats-in-hot-process-soapmaking

With any soap making process (whether it’s cold process or hot process or somewhere in between), you can add your lye to your goat’s milk frozen to prevent scorching. However, with hot process soapmaking, the high temperatures that the hot process soap goes through while cooking will cause the sugars to caramelize and turn the hot process goat’s milk soap a tan color.

Does it have to be this way? Nope! I love to color and swirl my handmade soaps, so a tan-colored soap base does not work for me. As a result, in my hot process goats milk soaps, I hold back some of my water and add that reserved liquid amount in the form of goat’s milk after the soap has cooled to a low enough temp that the sugars will not caramelize (about 180° F/82° C).

One of the benefits of adding the goat’s milk after the cook is that all of the nutrients, fats and sugars remain in their natural form as they do not go through saponification. So, you can use a smaller amount of goat’s milk to get those wonderful skin-loving benefits. I like to cook with 85% of my water, and add the remaining 15% after the cook. There are a lot of soapers who only hold back 5% or 10% and still feel that they get those benefits!

I am a curious person, and for this article, I wanted to create a soap where 100% of the liquid was goat milk, yet the soap was a creamy, milky color. And of course I wanted to make this soap hot process and did not want to deal with freezing the lye water. Sounds interesting, don’t ya think?

It was! And it came out great. Here is my soap made with goat milk as 100% of the liquid (I soaped with a 27% lye solution.):

Creamy Lightly Colored Hot Process Goat's Milk Soap
Creamy Lightly Colored Hot Process Goat’s Milk Soap!

The Hot Process Goat’s Milk Soap Experiment

In my experiment, I used a combination of fresh goat milk, along with powdered goat milk. For my experiment, I needed 14.0 ounces of liquid. I split that into 11.2 ounces of water for the cook, and reserved the remaining 2.8 ounces as goat’s milk with 1.4 ounces of goat’s milk powder (the amount needed to turn the 11.2 ounces of water into goat milk).

You can use use any soap recipe you like if you want to try this yourself! I used a combination of oils that I am fond of, because they generally produce a hard long, lasting bars (tallow, lard, sunflower, castor, rice bran and shea butter as superfat).

As usual, I cooked my soap, and then added my combination of goat’s milk and goat’s milk powder after the hot process soap was done cooking.

Cooked hot process soap in the pot!
Cooked hot process soap in the pot!

Additionally, I added one tablespoon of kaolin clay and colloidal oatmeal to my slurry of goat’s milk, powdered goat’s milk, sodium lactate, and yogurt. Even though I made sure all of the additives were well blended, I used a mesh strainer to filter the slurry while adding it to the soap batter.

Using a mesh strainer when adding anything to cooked hot process soap is always a good idea, just in case!
Using a mesh strainer when adding anything to cooked hot process soap is always a good idea, just in case!

For this hot process goat’s milk soap experiment, I opted for an unscented and uncolored soap. I really wanted to see what the final color would be. Sometimes a simple, unscented soap is wonderful!

Hot process goat's milk soap in the mold!
Hot process goat’s milk soap in the mold!

My conclusions? After testing the hot process goat’s milk soap, it is as great as my other hot process goats milk soaps made with just a small amount of goat’s milk alone. Honestly, I don’t think the added goat’s milk powder was necessary!

Creamy Lightly Colored Hot Process Goat's Milk Soap
Creamy Lightly Colored Hot Process Goat’s Milk Soap

Though, it was interesting to see the impact of goat’s milk powder as an additive. If you don’t have access to fresh goat’s milk, using the powder form will give you some of those same benefits, if you would like to test out this wonderful ingredient.

Want to see how fresh goat’s milk and powdered goat’s milk performs side by side? Check out the Lather Lover’s additive testing swap results to see these additives in action and many others!

For more information about how I hot process my soap, check out my other posts on hot process soapmaking!

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24 Responses

  1. So did you use 100% goat milk in this recipe? In the beginning of the article you mentioned using 100% goat milk , then you mention using 11.2 oz of water for the cook. Could you please specify how much goat milk you used and also did you add the goat milk powder to the milk or did you use water to reconstitute?
    I know you are just giving the basics of how to get a whiter soap with hp, But a slightly more detailed recipe would be more helpful for newbies like me.
    Thank you much.

    1. She specified: “For my experiment, I needed 14.0 ounces of liquid. I split that into 11.2 ounces of water for the cook, and reserved the remaining 2.8 ounces as goat’s milk with 1.4 ounces of goat’s milk powder (the amount needed to turn the 11.2 ounces of water into goat milk).”

      The water is turned into liquid goat’s milk AFTER the cook. What she did is actually pretty brilliant!

    2. Hi Anjali – I used a mix of fresh goat milk, and goat milk powder. the idea is to split the goat milk into two portions. I did add the powder to the fresh goat milk so that I could add both after the cook. I used 1.4 oz powder, 2.8 oz fresh goat milk and 11.2 oz water (this was for the cook).

        1. You can use goat milk for your lye water, however, your soap will turn a light brown. This is because the sugars in the goat milk will caramelize during the cook. The purpose of this experiment as to find a way to make a creamy, light colored goat milk soap using hot process.

  2. Thank you for your tutorials on hot process, they have been a great help. I started out with cp and never would have tried hp,if not for your articles. Thank you much!!!

  3. Thanks for the post. Doesn’t adding milk after the cook, effect the shelf life of the soap? I have seen many soapers add yogurt also after cook, but I am curious as ideally it would turn rancid soon isn’t it?

    1. Hi – the soap does not grow mold or bacteria because of the lack of water and the high ph environment. This is an issue for liquid soaps though but not for bar soaps.

  4. What was the basis of your calculations for the amount of water and milk? I don’t understand why did you decide to use exactly 11.2 oz of water. Could you, please, explain?

    Thanks!

  5. I tried using water:lye ratio at 1.5:1
    I followed this and used 75% water with the lye mix and planned to add the remaining 25% at the end of the hot process to smooth the soap.
    I added lye (maybe too hot) to crockpot of oils and sealed with plastic wrap. Walked away breifly (thought volcano would never happen to me) and came back to volcano everywhere.
    My counters were sanitized before starting this recipe so took a spatula and scraped up overspill and returned to crockpot.
    It looked like waxy mashed potatoes already so I added my warm milk and sodium lactate and stirred.
    I have a loaf that looks very crumbly.
    I’m sure I did a few things wrong. Please critique. Thank you.

    1. When you heavily water discount in HP, your risk of a volcano is much greater. I suggest you try again but soap at around 2.75:1. If you get very skilled at HP, you can start to discount a little more, but it takes experience to find out the ideal discount for your recipe. Good luck!

  6. Your recipe sounds lovely. I’d been thinking of something similar, but haven’t gotten around to it. Will definitely try this when I get some powdered goat milk. Thanks 🙂

  7. So for clarification, if my recipe calls for 24 oz. water, & I’m using goat milk powder (1 cup= 2 T per 3/4 c. Warm water) for my goat’s milk…it would take 6 scoops to equal 3 cups (24 oz. of liquid required), so could I use 14 oz. water to my 9.1 oz. lye required for cook than after cook use 10 oz. to make my slurry with the goat milk powder, 2 T. Honey, colloidal oatmeal, sodium lactate & add when below 180? Do I warm this?

  8. I definately think the goats milk is more for branding. Because, if only 5% of the water amount is goats milk, what is really the benefits? Remember that the soap itself will wash off most of the fat, protein and milk sugars that the goats milk provide. And what is then left? Nothing?

    And what is the difference for the skin between goats milk and cows milk? I am quite sure that just dumping in some butter and whey powder would be just as benefitial.

    But if all the water and even more (from powder) is milk from any animal, then it might be benefitional. But a few tablespoons of goats milk, no, I don’t believe in that other than for branding.

    I forgot to say that I definately, definately don’t believe one second in wonderful skin benefits from goats milk mixed with lye! What is lye? It is the same as drain opener (that has lye as the active ingredient + some additives), and why do drain openers work? It dissolves and destroy everything on its path! So to preserve all the skin benefitial bla-bla from goats milk in lye, oh no, I really refuse to believe that. It will all be distroyed and eaten by the lye. Like lye eats hair when it is used in hair removal creams. Do hair removal creams have skin benefits? No!

    But hot processed milk soap, from goat or crocodile, where the milk is added after the cook and the lye is dead, yes, I can believe that it will have some skin benefits, but only if used in an amount that is serious talking, so that actually some will stay on the skin after the soap itself have done its thing and washed most of it away.

    But for saving costs while branding products as magically skin benefitial from farm fresh milk added, yes a 1% or so of the water is more than good enough, but not for real skin benefits. I’m not so sure if it is the milk or the superfat that is skin benefitional? What about a 100% cold process coconut soap with 0% superfat, goats milk as 100% of the water, and where the fat from the goats milk also is calculated among the oils so that there is zero superfat, how would that soap feel? Makes your skin velvety soft and what not? I’m not so sure. Maybe the recipe itself and the superfat percentage, and what superfat you choose (for hot process) is the real skin benefit maker, and not so much the milk, especially for cold process?

    But I do believe in a ton of milk in hot process, goat or whatever, yes. And especially if some cream is added too with all its hard fat to soften the skin.

    1. If you’ve never worked with goats milk in hot process soap, nor have you ever used a bar of said soap or even shampoo bars (I have experience with both.); then I suggest you stick to your lane, and maybe open your eyes and your mind to see something new. Something, potentially, worth money to your business and your bottom dollar as a producer.

      Yes, sodium hydroxide is a caustic substance. Yes, it eats through hair in drains. But do you enjoy brined olives? Or what about traditional German Pretzels? Perhaps you prefer lutefisk… All of these FOOD ITEMS are produced with the same sodium hydroxide (lye) that Draino uses to make their product line. Yet, somehow, there is no degradation to the nutritional values of these.

      Being a person that raises Nubian goats for a living, and also one who is well versed in the qualities of these soaps; I can’t even begin to tell you how absolutely wrong you are. So wrong, in fact, that I feel like it’s unfair of you to expect that kind of mental and intellectual labour to be expended on your behalf, in order to educate you on something you obviously have no desire to learn about.

      So, please, before you go throwing out eroneous claims about a product that you’ve never made, nor used… I encourage you to try them; to see the anti-comedogenic and skin-conditioning benefits of these soaps for yourself.

      However, until then, I ask that you please let people just enjoy the things that are of interest to them without being subjected to some errant naysayer’s ramblings; and, please, take a damn seat!

  9. Thank you, Molly for the detailed article.

    I also want to share my experience with adding milk after cooking. I cannot make myself dry milk, so I make homemade Bulgarian yogurt, I drain it, until the milk becomes very thick. That’s my way to avoid adding dry milk.

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