Lye Calculator

To use the calculator add the amount of oils you want to use in the relevant block. The calculator will tell you how much water you must use to mix the lye solution and will tell you how much caustic to use.

Always add caustic to water and not the other way around. Basic Soap Making Instructions: Wearing gloves, mask, safety glasses , Add Caustic to water. Stir gently until dissolved. Simultaneously heat your oils to 43 degrees celcius. Add caustic solution to oils once it has cooled down to 43 degrees celcius. Stir until trace occurs.