Soaping with Hemp Milk – Milk in Oil Method

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Hemp milk is a great alternative to animal milks such as goat or cow if you want your soap to be vegan. Hemp milk contains omega essential fatty acids, proteins, amino acids and many more goodies. It has a great label appeal on soap and is perfect for certain target markets.

hemp milk soapThis tutorial follows the milk in oil method of milk soapmaking.  In the “Milk in Oil” method…you make a lye solution with equal parts lye and water. Then you add another equal part milk to the oils before you add the lye solution. This prevents the milk from burning in the lye solution. You also don’t have to go through the hassle of freezing your milk. For some people it is just easier to do.

Let’s make soap!

The recipe:
Coconut oil – 20 oz
Olive oil – 20 oz
Rice bran oil – 5 oz
Avocado oil – 5 oz
Castor oil – 4 oz
Shea butter – 5 oz
Sweet almond oil – 5 oz
Hemp milk – 9 oz

Sodium hydroxide – 9 oz
Water – 9.5 oz

Gear up in your goggles and gloves!  If you are new to soapmaking…visit our beginner tutorial first.

The first step is to make our lye solution.  I mention above to make the lye solution with equal parts of lye and water.  I always add a splash more because sometimes the mixture can fall out of solution if there is not enough water.  Usually equal parts is the most concentrated you should go.

Measure out the water and the lye.  Add the lye to the water and mix in a well ventilated area.

lye solutionPut that to the side.  Weigh out the shea and coconut oil and melt.

coconut and sheaOnce melted, add all of the liquid oils to the melted oils.

IMG_2303Add 9 oz of hemp milk to the melted oils.  I was able to find hemp milk at whole foods.  Check out natural food stores.

IMG_2305I also used a fragrance oil blend from Lebermuth – Rosemary, Grapefuit and Lime.  I used 3 oz.

IMG_2307Take a look at the lye solution.  You might see some floating white filmy stuff.  Give it a mix.  This is just because it is such a concentrated solution and the lye is reacting to the carbon in the air and forming sodium carbonate.  Lye (undissolved crust) stuck to the bottom of your container is bad…white floaties are not.

lye solution Add the lye solution.  Make sure you have your goggles on!

IMG_2310Now it is time to stickblend!

IMG_2311Blend until trace.

IMG_2316I wanted to do some textured tops.  I filled the molds full.

IMG_2319I let the leftover soap in the pot get thick.  Then I piled it on with a spoon.

IMG_2321Then I took a craft stick and played with it until I got texture that I liked.

IMG_2324IMG_2325IMG_2326Let sit overnight, cut and cure for 4 weeks!

Happy (Hemp Milk) Soaping!

27 Responses

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  1. LuAnn

    It looks very creamy! Is your hemp milk 100% milk, without any other ingredients? The only ones that I can find have extra stuff in them, like cane sugar, guar gum, and usually ascorbic acid as a preservative. I’ve found the same thing in almond and coconut milks, so I haven’t tried to soap with them yet!

    · Reply
  2. Author

    No unfortunately it has the “other” stuff in it. They had some other brands I’ll look at next time I’m there.

    · Reply
  3. Jen

    You finally answered my question that I’ve been searching for years on the crust on top of the lye water, thank you :)

    · Reply
  4. cindy

    Hi, I just checked out the Lebermuth site because of your reference, and I didn’t find that particular blend anywhere. Is it a special order blend?

    · Reply
  5. Christ

    Did you cover and let it gel? Or did you prevent it from going through gel phase. Thx Amanda!!

    · Reply
    • Author

      I actually didn’t cover it but it gelled. So it heated up a bit in the silicone. I got a partial gel.

      · Reply
  6. Shelia

    I love the tops. I usually just let mine get a little thick in the mold and then start manipulating the tops until I like it. It seems so much easier and prettier your way. I will try it next time.

    · Reply
  7. I actually never thought of making my own soap because it’s so much easyer to buy it in the supermarket. But after reading through this I think that it might actually be quite interesting to try this.

    · Reply
    • amanda

      Add up all of the ounces in the recipe and divide by 16. I’m doing it on my phone and in my head and getting just over 5.25 pounds.

      · Reply
  8. Cheryl Taylor

    I am just wondering what temperature your lye water was and the milk/oil temperature was. The soap looks beautiful and I’m going to have to try this!

    · Reply
    • amanda

      I don’t usually take temps but like to be around 90 degrees. I would keep them below 100.

      · Reply
  9. Sarah Slette

    I am going to try this right now!! I have two containers of Hemp milk-no one will drink—so here it goes!! :D Amanda, have I told you lately how much I love your blog? <3

    · Reply
  10. Monica Gail

    This blog is fantastic! I haven’t made my first batch yet, doing some research before I actually start. Moreover, you have filled in some blank spaces, that the books leave out.
    Question: since you use a 1:1 lye solution, and add frozen milk, same wt as the water, to the oils, is this a heavy lye product? What PH reading do you get? I can see myself using this process..Thank you ,
    Monica Gail

    · Reply
  11. Kim

    I love the simplicity of this soap! I’ve noticed that most recipes call for fragrance to be typically added at trace but in your technique you added the fragrance before the lye? Could you please teach me why? Thank you in advance.

    · Reply
  12. Ella

    Never heard of the Milk in Oil Method, very interesting!! I will give it a GO! Thank you for sharing :-)!

    · Reply
  13. shana chambers

    Thank you for sharing this is the first blog i have responded to and find your soap making method very easy to follow will be making my first batch soon and what about adding some color or colors to this soap.

    · Reply
  14. Gabz

    Never thought of using hemp milk but I will now :). I use organic coconut milk (instead of water) and it’s just lovely – creates a beautiful, creamy, almost pure white bar.

    · Reply
  15. Ana

    Thanks for this tutorial. I haven’t tried making soap with milk yet, must say I was a bit intimidated. The texture of the soap looks really great that way.

    · Reply
  16. Christine

    So if I am understanding correctly, you run the recipe through a lye calculator to get the lye amount only, ignoring the suggested water amount and take it from there? Hope This is right. I measure in grams (in UK)!
    Please confirm when you are able. Thank you. Any feedback from followers most welcomed.

    · Reply
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