Snapshot
- Overview
- A soap-based ingredient that creates lather and stabilizes creams.
- Category
- Cleansing, Emulsifying
- Type
- Surfactant
Potassium Stearate
Potassium Stearate is the potassium salt of stearic acid, a water-dispersible soap base and surfactant. It provides cleansing lather, stabilizes emulsions, and tunes viscosity in bars, creams, and pastes.
Like this ingredient?
Our take
Is Potassium Stearate a Good Ingredient?
It rates Good because it's an effective cleansing agent that helps lift dirt and excess oil from skin, and while it's primarily a functional ingredient rather than a targeted skincare active, it reliably contributes to the effectiveness of many cleansing formulas.
What it does
Skin Benefits
Creates a satisfying lather and helps lift away oil and debris for a cleaner feel. Contributes to a smooth, stable texture that spreads easily on skin.
Where you'll find it
Uses in Skincare & Cosmetics
Often found in bar soaps, facial cleansers, and shaving creams to deliver cleansing foam. Also used in cream washes and paste formats for structure and slip.
Before you use it
Safety
Potassium Stearate is generally considered safe for cosmetic use and has a long history of use in soap and cleansing products. Some individuals with very sensitive or dry skin may find certain soap-based surfactants mildly drying depending on the formulation.
Products with Potassium Stearate
