Epigallocatechin gallate (EGCG) is a polyphenol catechin derived from green tea (Camellia sinensis) used topically for its antioxidant and anti-inflammatory properties. It helps neutralize free radicals, may reduce UV-induced oxidative stress, and is studied for photoprotective and anti-aging benefits.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or redness | Uncommon | Possible at higher concentrations or in sensitive skin. |
| Allergic contact dermatitis | Rare | Sensitization to botanical polyphenols has been occasionally reported. |
| Dryness or stinging | Rare | Transient, typically formulation-dependent. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.