superfatting

[wilderness1star]

I'm not sure how to figure out superfat. This is my recipe;
22 oz goat milk
16 oz Olive oil
17 canola oil
11 cocnut oil
10 Palm oil
6 sweet almond oil
So how do I figue out the superfat. I know the goat milk has a high fat content. Please help. I've been making soap since Aug 2012 and have had really good luck until recently when I tried a couple of new fo's

 

[Paintguru]

Superfat is just the extra fat that does not react with the lye when combined, so without a lye content of your soap you can't figure out the superfat %.

 

[Sammi_552]

How much you superfat is based on your personal preference. I may superfat at 5% and be very pleased with how it feels on my skin but a 5% superfat may not feel right on your skin. I always superfat my recipes just to make sure it will not be lye heavy.

 

[AlchemyandAshes]

To superfat, you subtract a percentage of the lye required to saponify the oils you are using.
For example:
If it requires 10 oz of lye to totally saponify 100 oz of your specific oils, and you want a 7% superfat:
10 oz x 0.07 = 0.7 oz, which would mean you need to use 9.3 oz (10 - 0.7) of lye to achieve a 7% superfat.

Make sense? Always use a lye calculator like SoapCalc to determine how much lye to use. SoapCalc will figure your recipe with a superfat you set. It's advisable to use at least a 5% superfat to leave a "cushion" for weight errors, but you can go as high as you feel comfortable to get the results you prefer. I like 7% for soaps for dry skin, and 5% for soaps for oily or normal skin. I use a 20% superfat with my salt bars to balance out the drying effect of the 90% Coconut oil. Most people use between 5-10% superfat in most of their soaps. And just so you know, there has not been and correlation between rancidity (DOS) in soap and higher superfat percentage.

 

[hoegarden]

To me superfat can de done in 2 ways:
1) get the lye amount base on your fomular and reduce the lye to be used or;

2) get the lye amount base on your fomular, instead of reducing the lye amount, add in more oil