How to make a super fatted soap

Petticoat Prepper here.

I mentioned my super fatted soap recipe on WDYDTPTW that I intended to send in so here it is. This isn’t an entry into the contest, it’s just a recipe.

I have very dry skin especially during winter. I get red itchy flakey patches that drive me nuts and generally don’t go away until part way through summer. I’ve tried everything on the market and nothing seems to help me. So I used the on line calculator to make a super fatted soap.

If you don’t know the basics for home made soap then read Bam Bam’s awesome post.  She makes it easy to understand and follow. If I can do it then anyone can!

I measured my two plastic boxes I use for molds and figured out I needed 128 ounces to fill both, this recipe comes in just a bit shy (114 oz) but I still got good sized bars to use. I was a bit impatient when removing from the molds so be sure you give it enough time to set.


  • 6 oz castor oil
  • 32 oz canola oil
  • 8 oz coconut oil
  • 16 oz lard
  • 16 oz olive oil
  • 10.27 oz lye
  • 25.74 oz water


Follow the directions in Bam Bam’s great post and hopefully you’ll have less of a problem with dry, red, itchy skin. It’s been good for me as I’ve not had issues this winter; next time I think I’ll try adding some kind of smell to it. I have given a few bars out and each of my friends say it’s like washing with lotion.


  1. Thanks Petticoat Prepper, I too suffer from very dry skin. I will definitely be trying this recipe.

  2. Petticoat Prepper says:

    Good luck with this, soap making is fun! If you find you need even more fat to combat the dry skin just go to the on line lye calculator and work a new recipe. I think this one is a 5% super fatted.

  3. Mother Earth says:

    I have copied your recipe. I love making soap and trying new combinations…so thanks!

  4. Petticoat Prepper says:

    Mother Earth,
    Hope you like it, it’s my first recipe. I was so tickled with it! I just can’t believe how much better my skin has been.

  5. PP;
    My friend makes soap and is always looking for different recipes to add to her collection. Thank you for sharing the recipe, I am sure she will be trying it soon.

  6. Happy Camper says:

    Thanks for sharing 🙂 anyone who’s into handmade soap rates very highly from me.
    I’ve been a soap maker for about 5 years, I’ve never tried to profit from doing it but can easily break even. So I think of it as a hobby that pays for itself.
    But I make awesome, natural soap. Based on a recipe from 1895.
    People forget that their skin is the largest organ of the body and must be cared for as such.
    If I can suggest to add to your recipe:
    Super fatted at 5%, work out the 5% of the oils of the recipe and hold them back. Add these oils after trace.
    For a harder and longer lasting bar, use organic bees wax at 3% of the total oils. Add the wax in when the oils are hot.
    For more lather in your bars, add a few tablespoons of raw sugar when the oils are hot.
    To add skin food to your bars (but will decrease the hardness and longevity of the bars) use powdered whole oats or egg whites at 3%, added after trace to a cool mixture so they don’t cook.
    Hemp oil is pure magic in soaps, this is the basis of Dr. Bronners soaps.
    For goats milk soap, (personally I think it’s overrated) make your soap on water as per normal, then add powdered goats milk at a light trace to let it disolve in. This stops the sugars caramelising.
    Happy soaping, give it a try, it’s awesome I promise 🙂

  7. Petticoat Prepper says:

    Happy Camper,
    Thanks for the advice! I’ve only made a couple of tries but I have to say I love making it. I’ll try the 5% after trace!

  8. Tactical G-Ma says:

    Thanks Petticoat!

    Gonna give this a try!

  9. You guys are talking my language now. 😉
    I used to make my own soap all the time & got out of the habit after our local grocery store stopped selling lye. I found a new source, so I’ve started up again.

    When my boys were little I used to make pure Castile soap – 100% Olive oil for them because they’d get horrible eczema in the winter. Or make some with Cocoa butter added.

    I would also make 100% lard soap which I would grate for laundry soap. I’ve made some with coffe & coffee grounds to use in the kitchen.

    It’s amazing to me how you can change the amount of oils just a bit & make such a different soap.

  10. Your recipe sounds very moisturizing. I’ve never made my own soap, but I have used Dr Bronner’s liquid soap to make my own foaming hand soap.

    If you want to add scent to your soap that’s all-natural, try using essential oils. I’m not talking about the ones you can buy at, say, Hobby Lobby or the grocery store. Those aren’t 100% pure. I’ve used both NOW Foods brand (found at most health food stores) and also Spark Naturals (I’m an affiliate with them) essential oils with great success. Just make sure it’s listed as 100% pure with no additives. 🙂

  11. Desert Fox says:

    Great posts here. I’ve been making soap for a little while and have had great successes and a few failures, but all is a learning curve. Superfatting is the process of adding oils after the soap has traced, thus no longer mixing with the lye. (Trace is the point where the oils and lye have totally absorbed each other and are cooling and getting thicker). If adding too much at this stage, the soap becomes greasy, so a 5% superfat is good. Some soapers reduce the basic recipe by the amount of extra superfatting oils, thus balancing the end product. I usually superfat with two or three of these oils: castor, avocado, almond or grapeseed .

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