Quercetin is a plant-derived flavonoid used in topical formulations for its antioxidant and anti-inflammatory properties, helping to neutralize free radicals and calm skin. It is often included to support protection against oxidative and UV-related stress.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or transient redness | Rare | Generally well tolerated; occasional irritation at higher concentrations |
| Allergic contact dermatitis | Very rare | Isolated sensitization reports to flavonoids |
| Temporary yellow staining of skin or fabric | Uncommon | Due to the compound's natural yellow pigment |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.