thickener · emollient
Polyhydroxystearic Acid
Generally safe·Moderate evidence
A stearic acid derivative used to thicken and stabilize formulations while providing mild emollient properties. Graded low concern with no documented sensitization or safety issues.
Products with Polyhydroxystearic Acid
References
Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.