Carrageenan

A polysaccharide extracted from red seaweed used to thicken and stabilize formulas. It is well tolerated in topical cosmetics; concerns from food ingestion studies are not directly applicable to cosmetic use. People with seaweed sensitivities should patch test.

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.