What does Superfatting mean?

Butter Bar


On the "How We Make Soap" page we explained that when the sodium hydroxide (lye) and liquid are mixed with the oils during the initial soap making stage, a chemical process called saponification begins.

The term saponified means the oils and sodium hydroxide/liquid solution have bonded together, neutralizing the sodium hydroxide and combining the ingredients into soap.

Superfatting is the process of adding extra fats (oils or butters) when formulating a soap recipe, so there is more fat in the mixture than the lye can react with during the chemical reaction.

Superfatting leaves a portion of unincorporated oils in the finished soap. Superfatted soaps have superior moisturizing and emollient qualities.