Superfatting Soap - An Explanation | BrambleBerry
Soap making is a science at heart. When you add color and fragrance, it turns into an art. Each oil has its own saponification value, or the amount of lye it takes to turn 1 gram of oil into 1 gram of soap. When we make cold process soap, it’s a mathematical formula that looks like this: (oil amount) x (SAP value) = lye amount needed.