Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The use of
excess fat insoapmaking to consume thealkali and give thesoap a moremoisturizing effect.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Oils are added using a process called superfatting right before the soap is poured into the molds, which allows the oils to retain their original form for optimum moisturization.
Really Natural 2009
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The recipes were the same except for the superfatting level.
Archive 2007-08-01 Anne-Marie 2007
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The recipes were the same except for the superfatting level.
The Reign of Erik, Part Deux Anne-Marie 2007
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I like doing soap classes this way so that the concept of superfatting/lye discounting is clear.
Spilling Lye Water & Fresh Soap Anne-Marie 2007
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I like doing soap classes this way so that the concept of superfatting/lye discounting is clear.
Archive 2007-08-01 Anne-Marie 2007
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Shaving creams and pastes are of the same nature as shaving soaps, but usually contain a larger proportion of superfatting material and considerably more water.
The Handbook of Soap Manufacture H. A. Appleton
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_ -- If desired, the final neutralisation of free alkali can be carried out during the milling process, any superfatting material being added at the same time.
The Handbook of Soap Manufacture H. A. Appleton
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With regard to superfatting material, the quantity of this should be very small, not exceeding 6-8 ozs. per cwt: The most suitable materials are vaseline, lanoline, or spermaceti.
The Handbook of Soap Manufacture H. A. Appleton
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Possible theories include using soft oils, incomplete curing, high humidity, over superfatting or oxidation, according to
Mashable! 2010
vendingmachine commented on the word superfatting
n. The use of excess fat in soapmaking to consume the alkali and give the soap a more moisturizing effect.
"Many soapmakers like to have some extra oils in their soap that are leftover and not bound to lye. Any extra oil left in the soap and not attacked by the lye is called a ‘superfat.’ The terms ‘superfat’ and ‘lye discount’ can be used interchangeably.
To figure out a superfat, you can do it a few different ways. My favorite is to let the lye calculator figure it out for you or you can take the amount of lye that you are supposed to use and multiply it with the following equation (1 – % superfat you want). So, if you wanted to superfat your Olive Oil soap in the above example by 4%, you would do the following (.134 oz. lye) x (1 – .04) = .1286 oz. lye. Or you can do the rough ‘n’ easy way; for a one pound batch of soap, a 5% superfat works out roughly to .8 oz. of extra oils per pound of soap."
June 21, 2015