EGCG (epigallocatechin gallate) is the primary polyphenol in green tea extract, valued in skincare for its antioxidant, anti-inflammatory, and photoprotective properties. It helps neutralize free radicals and may reduce signs of UV-induced damage.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or redness | Uncommon | Typically transient, more likely at higher concentrations or on sensitive skin |
| Allergic contact dermatitis | Rare | Sensitization to green tea polyphenols has been reported but is infrequent |
| Dryness or mild stinging | Rare | May occur in some individuals, often formulation-dependent |
| Discoloration of product or skin staining | Very rare | Related to oxidation of the extract rather than a true biological effect |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.