Soap / Lye Calculator

We redesigned our popular soap / lye calculator to be more powerful and even simpler to use!
  • Two "Wizard modes" offer step-by-step instructions, making it extremely friendly for novice soap makers.
  • "Expert mode" features enough options to cover all needs of expert soapmakers.
Go to the Soap Calculator

Safety Precautions for Soap Making

Making soap using the cold process can be incredibly rewarding. However, handling lye (or any other chemical) always comes with safety concerns.
Read this article to learn about potential hazards and how to make cold process soap safely - just like a pro!

Safety precautions for soap making: a complete guide

How to Use the Cosmetics Lab Soap Calculator

New to the Cosmetics Lab Soap Calculator?
In this tutorial, we’ll walk you through how to use its features to confidently craft your own custom soap recipes!

Read the complete tutorial