In this online course, you will:

  • learn how to make Castile bar soap using the cold process method 

  • make one (1) batch of scented Castile soap with oatmeal (~650g) using pure olive oil as base

  • learn how to make your own soap formulations in the future, using different oils and ingredients

  • learn how to calculate ingredient amounts based on your mold size

  • learn proper lye handling and computation

  • learn design techniques such as coloring and layering your soap, and making swirls

  • get supplier information for additional soap materials

  • get a PDF of our complete info booklet

Ready-made kits for hassle-free learning

Purchase a kit with everything you need--no need to worry about sourcing tools and materials for the activity!



Meet Your Instructor

Mia Lauchengco

Hi, I'm Mia! I started making soaps out of desperation—I wanted a natural, mild soap for my daughter who was a baby at the time. Little did I know that making Castile soap in my kitchen would lead me to start a business, make lifelong friends, and teach others how to make soap and scents!

Allow me to share with you what I’ve learned in more than a decade’s worth of experience, and thousands of hours reading through learning material—so that you don’t have to do it all yourself.

Let’s make soaps and scents, and let’s have fun!

Course curriculum

  • 1

    Welcome to Castile Bar Soap Making Class

    • WELCOME TO SO TRUE WORKSHOPS

    • IMPORTANT NOTE

    • BEFORE WE BEGIN

    • TOOLS AND EQUIPMENT

    • RAW MATERIALS

    • DOWNLOADS
  • 2

    Module 1: Let's get started

    • INTRODUCTION AND TERMS

    • ADDITIONAL INFORMATION ON TRACE & CURE
  • 3

    Module 2: What's in your soap?

    • WHAT GOES INTO SOAP?

    • SOAPING OIL PROPERTIES

    • OIL GRADES

    • ADDITIVES

    • COLORANTS
  • 4

    Module 3: Preparing your lye and formulating a recipe

    • COMPUTING AND PREPARING YOUR LYE SOLUTION

    • ESTIMATING YOUR BATCH SIZE

    • CALCULATING YOUR LYE

    • COMPUTING FOR SCENT

    • USING ADDITIVES

    • PICKING A SOAP MOLD

    • USING COLORANTS
  • 5

    Module 4: Let’s make soap!

    • GOING HANDS-ON (DEMO)

    • A NOTE ABOUT REACHING TRACE

    • A NOTE ABOUT ADDING IN YOUR SCENT
  • 6

    Module 5: Layers and swirls

    • Layers and swirls with BONUS CONTENT

    • CHOOSING A SOAP CUTTER
  • 7

    Module 6: You did it!

    • CONGRATULATIONS!

    • Downloads - Castile Bar Soap Info Booklet

    • SO TRUE WORKSHOPS ACKNOWLEDGMENTS

Let's make soap

Get started on the soap making fun today! We look forward to seeing you in our online community

Sign me up today!