LatherFear of lye is the only thing between you and every soap you’ve ever wanted to make.
Sodium hydroxide is not dangerous when you understand it. Every professional soapmaker works with lye daily. The difference between fear and fluency is exactly twelve minutes of chemistry — and we cover it on Day One.
Every oil has a unique SAP value. You’ll calculate yours.
Lower water = harder bars, faster unmold. You choose.
Your skin-feel dial. We teach you what each number means.
“I’d watched forty-seven YouTube tutorials. Lather was the first time someone explained why the lye calculation mattered — and I stopped being afraid.”
Fragrance oils are a shortcut. Essential oil blending is a skill.
Six modules. Each one designed so that by the end, you can pick up any oil, any botanical, and any colorant — and formulate something original without consulting a recipe.
Oil Chemistry & SAP Values
Why coconut oil produces a hard, cleansing bar while avocado oil adds creaminess. You’ll read a SAP chart the way a baker reads a hydration table.
Lye Calculation by Hand
No app dependency. Pencil-and-paper formulation so you understand every gram.
Essential Oil Blending
Fragrance oils are a shortcut. Blending essential oils for soap — accounting for acceleration and ricing — is a skill that takes your bars from commodity to craft.
Natural Colorants Lab
Brazilian purple clay, French green clay, madder root, activated charcoal — how to use each without morphing, bleeding, or fading.
Swirl Techniques
In-the-pot swirl, Taiwan swirl, drop swirl, hanger swirl. With tracing guides and pour-temperature charts.
Labeling for Legal Sale
FDA cosmetic labeling, INCI ingredient names, net weight declarations. Everything you need to sell at markets or ship subscription boxes.
Real chemistry knowledge, given away before we ask for anything.
The Cold-Process Starter Formulation Guide
A twelve-page PDF covering SAP values for fifteen common oils, a hand-calculation worksheet, and three beginner-safe formulations you can make this weekend — with full chemistry notes.
Lye Safety Masterclass
15 minA fifteen-minute video covering PPE setup, lye mixing sequence, temperature management, and the three mistakes that cause every soap-making accident — and how to never make them.
They came in afraid of lye. They left selling at markets.
These are real formulations from real students — photographed by them, priced by them, sold by them. No recipes borrowed. No instructor’s batter poured on camera.
“I started because I wanted to stop buying from Etsy. I stayed because I couldn’t stop formulating. My first batch sold out at the neighborhood market in forty minutes.”
“The labeling module alone was worth the entire course. I’d been selling without proper INCI names for two years. Lather got me compliant in a weekend.”
“I had sodium hydroxide in my cart for fourteen months before Lather. The lye safety module made me realize I’d been catastrophizing. I made my first batch three days later.”
“Forty-two subscribers in my soap box after three months. The formulation freedom this course gave me — I can design a scent, a color story, and a label from scratch. That’s a business.”
“I started because I wanted to stop buying from Etsy. I stayed because I couldn’t stop formulating. My first batch sold out at the neighborhood market in forty minutes.”
“The labeling module alone was worth the entire course. I’d been selling without proper INCI names for two years. Lather got me compliant in a weekend.”
“I had sodium hydroxide in my cart for fourteen months before Lather. The lye safety module made me realize I’d been catastrophizing. I made my first batch three days later.”
“Forty-two subscribers in my soap box after three months. The formulation freedom this course gave me — I can design a scent, a color story, and a label from scratch. That’s a business.”
Start with the free guide. No commitment.
Twelve pages of real chemistry. SAP values, calculation worksheets, three starter formulations. Yours immediately.
Send Me the Formulation Guide