Epigallocatechin gallate (EGCG) is a polyphenolic catechin derived from green tea (Camellia sinensis) used in topical skincare for its antioxidant and anti-inflammatory properties. It helps neutralize free radicals and may reduce UV-induced oxidative stress and signs of photoaging.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or stinging | Uncommon | Transient redness or tingling, more likely at higher concentrations or on sensitive skin. |
| Contact dermatitis | Rare | Allergic or irritant reactions reported infrequently in patch-test and case studies. |
| Dryness | Rare | Occasional reports, often formulation-dependent. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.