Antioxidant ingredient
Quercetin
A widely distributed plant flavonoid used in cosmetics as a potent antioxidant and anti-inflammatory agent that protects against UV-induced oxidative damage and supports skin barrier recovery.
Also known as: quercetin flavonoid
antioxidantanti-inflammatoryphotoprotective
Benefits
- ✓Potent plant-derived flavonoid antioxidant that scavenges reactive oxygen species and reduces oxidative stress markers
- ✓Anti-inflammatory activity via suppression of inflammatory signaling pathways
- ✓Photoprotective — helps defend skin against UV-induced oxidative damage
- ✓Supports barrier recovery and hydration after UV or chemical damage
- ✓Activates SIRT1 pathways and enhances dermal fibroblast activity
Watch for
- ⚠Incompatible with zinc oxide physical sunscreens — combination can cause a temporary skin-tinting/discoloration reaction
- ⚠Limited long-term clinical topical safety data; generally considered safe at cosmetic concentrations
