The ingredient, explained

Camellia sinensis leaf extract

Selected human evidence concerns a specific topical leaf extract.

Antioxidant

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Ingredient guide

What it is and what it does

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Antioxidant: Limits oxidation, including deterioration of formulation ingredients. This label alone does not show a clinical antioxidant effect in skin.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Human topical research

Extract-containing formulations increased skin moisture and improved surface roughness over 15 to 30 days.

What this does not tell us

Twenty-four volunteers and a specific glycolic leaf preparation. Randomization and blinding are not established; cannot transfer isolated EGCG, seed extract or oral tea findings.

Sources for this summary. PubMed 23742288 ↗

Research review checked Oct 1, 2026

Bounded scan of 144 local candidate titles and relevant green-tea abstracts, with targeted primary-source exact-leaf topical searches. Not an exhaustive systematic review.

Ingredient research is not proof that a product containing this ingredient works.