Polymethylsilsesquioxane

A silicone-based powder used to improve texture and slip in formulas. It is lightweight, absorbs excess moisture, and provides smooth application. Well studied in cosmetics with no skin safety concerns.

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.