Potassium Stearate
Potassium stearate is the potassium salt of stearic acid, a fatty acid. In cosmetics, it primarily functions as an emulsifier, helping to blend oil and water components in a stable mixture. It can also act as a surfactant, aiding in cleansing, and provides a pearlescent effect in some formulations. It is commonly found in soaps and creams.
NoneEmulsifierEvidence: Medium
RiskLow 1 / 4
Irritation i1 / 4
Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.
Rated by SpottyLabs' ingredient methodology, independent of brands.
Things to watch
- Potential for mild skin irritation in sensitive individuals
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Frequently asked questions
- What is potassium stearate used for in skincare?
- Potassium stearate is primarily used as an emulsifier, helping to mix oil and water ingredients to create stable product textures like creams and lotions. It can also contribute to the cleansing properties of a product.
- Is potassium stearate safe for sensitive skin?
- While generally considered safe, some individuals with very sensitive skin might experience mild irritation from potassium stearate, especially in higher concentrations or rinse-off products.
