Resveratrol

A potent antioxidant that helps protect skin from free radical damage and aging. Resveratrol exerts its dermatological benefits primarily through potent antioxidant and anti-inflammatory activities. It neutralizes reactive oxygen species and upregulates endogenous antioxidant enzymes, while inhibiting pro-inflammatory pathways like NF-κB and COX-2. Furthermore, it activates sirtuin 1 (SIRT1), a longevity-associated protein, contributing to improved cellular defense and repair against photoaging by reducing collagen degradation (e.g., MMPs) and promoting collagen synthesis.

Resveratrol is generally considered safe for topical cosmetic use with low irritation or sensitization potential at typical concentrations. While the CIR Expert Panel has not issued a specific report on resveratrol, its safe use in cosmetics is well-established.

Look for products with 0.5-3% (most formulations typically use 1-2%) for clinical efficacy.