Better formulas start with better decisions
Practical explanations of lye, water, oils, superfat, molds, and production records—written to help you understand the calculation, not just copy a number.
How to use a soap calculator without guessing
A dependable workflow for choosing oils, calculating lye and water, checking the formula, and recording the batch.
FORMULATIONSoap superfat explained: lye discount and added fat
What 5% superfat means, why two methods produce different batch weights, and how to choose deliberately.
WATER MATHLye concentration vs. water-to-lye ratio
Two valid ways to describe the same lye solution—and the conversion that prevents costly confusion.