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? about superfatting...


ignitethesenses
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I’ve heard two different versions for superfatting.

1) The oil/butter you are choosing to superfat with you can add to your soap after trace and it will be the predominate oil left free after the lye has completely saponified with the oils and turned into soap. For my example, I am going to superfat with shea butter. I include all of my oils/butters when running my soap recipe through a lye calculator to figure my amount of lye, including my shea butter. The amount of lye I will use is whatever it shows for the 10% excess fat. When I combine my oils/butters, I do not include the shea butter. I melt that separately and set aside. After my lye/water solution is added to the oils/butters and my soap is at trace, I add the melted shea butter and stir until fully blended in. The thought is, at this point in time, the lye has already bonded with the oils/butters and there is no or very little excess fat left, so the shea butter will be all of the excess fat.

2) Melting a butter (or using a warmed oil) separately is a waste of time, because even at trace, the chemical reaction is just starting to take place, the lye is not bonded to the oils/butters just yet. Adding the shea after trace will not make it the predominate excess fat left over after the saponification takes place. It will be an equal portion of fats in the recipe (equal to the proportion they are in the recipe).

About 2.5 years ago, I made my normal soap recipe two different ways, one adding the shea at medium trace and the other way, melting all oils/butters together. I did not notice a difference from one batch to the other. After that, I quit “super-fatting” and just figured the % excess fat.

For what you are wanting to do, include the 10% of the certain oil that you want to add at trace into your soap recipe. You want a 10% excess fat, so find the lye amount you need to use in that row (if looking at www.the-sage.com lye calculator). 10% is a bit on the high side for a discount too. Make sure you use fresh oils/butters and it might not hurt to add an anti-oxidant to your batch also. It will be more susceptible to DOS.

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Interesting...

What about superfatting with hot process? I read instructions that basically said, just before you put the soap in the mold, you can add fragrance/superfat/etc... I used that method for cphp, but I didn't add anything...I just put it right in the mold.

Oh, and the fat I want to use to superfat, is stable - lanolin - would I still be likely to get DOS?

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Interesting...

What about superfatting with hot process? I read instructions that basically said, just before you put the soap in the mold, you can add fragrance/superfat/etc... I used that method for cphp, but I didn't add anything...I just put it right in the mold.

Oh, and the fat I want to use to superfat, is stable - lanolin - would I still be likely to get DOS?

Superfatting is different for HP, because by the time you add your lanolin to the batch, the lye is completely gone, all you're left with is the soap. Sorry I didn't differenciate between CP and HP and superfatting. My example above is discussing CP only.

Lanolin? I am sorry, but I know nothing about that.

Hopefully someone with experience with it will come along and answer. If not, I've got some folks I can ask.

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Oh, my original intentions were to cp ;) But I was just wondering about hp as well - if the hp method better fits what I want to do, then I'll do it that way :)

Lanolin has a very long shelf life. I'm hoping, if I can get that to be the remaining fat, I won't have to worry about DOS.

I guess I'll just test both methods - cp and hp - to see which gives me the bar I want :D

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