StretchLearn Course
Lye math, fragrance formulation, curing, and labeling, taught with real recipes and exact numbers.
Course Overview
Learn to make handmade soap from your first melt-and-pour bar to a fully formulated cold-process recipe you design yourself. You will master lye safety, run accurate saponification math with a calculator like SoapCalc, and blend fragrance and color at safe usage rates. The course finishes with cure science, troubleshooting, and the labeling rules that apply if you decide to sell.
Learning Outcomes
Produce a finished melt-and-pour bar using correct base prep, fragrance load, and color
Handle sodium hydroxide safely using proper PPE, mixing order, and ventilation
Calculate a balanced cold-process recipe with a lye calculator and a chosen superfat
Formulate fragrance and colorant additions at industry-standard safe usage rates
Trace, mold, cut, and cure cold-process soap and diagnose common defects
Label and document soap correctly for legal compliant gifting or small-batch sales
Curriculum Preview
Preview the course structure, see how the modules build on one another, and understand the path this program is designed to take you through.
Understand what soap actually is, set up a safe workspace, and make a finished melt-and-pour bar on day one.
Choose oils for the qualities you want, learn the additives that improve a bar, and read a soap recipe like a formulator.
Run a full cold-process batch from measuring to molding, including trace, design techniques, and gel phase.
Cure bars properly, package and brand them, and meet the labeling and regulatory rules for selling.
Built for Application
This program is designed around progression: focused lessons, structured modules, applied resources, assessments, and a course rhythm that turns information into usable capability.