antioxidant · active
Polygonum Cuspidatum Root Extract
Generally safe·Moderate evidence
A plant extract rich in resveratrol, a polyphenol studied for antioxidant properties in cell and animal models. Human clinical data on topical efficacy is more limited than marketing sometimes suggests, but documented safety concerns are minimal at cosmetic concentrations.
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.