Green Tea Extract
Camellia Sinensis Leaf Extract is derived from the leaves of the tea plant (Camellia sinensis, Theaceae) and is also commonly known as green tea extract. Its key active components are polyphenols, specifically catechins, with EGCG (EpiGalloCatechin Gallate) being the most abundant and active. Quality varies significantly between extracts depending on growing conditions and processing; high-quality extracts contain 50–90% catechins and are typically brownish with a characteristic odor. CosIng lists its functions as antimicrobial, antioxidant, astringent, emollient, humectant, masking, oral care, skin conditioning, skin protecting, tonic, and UV absorber.
Green tea extract is a well-researched antioxidant that helps protect skin from free radical damage and UV-induced irritation, redness, and sunburn cells. Its catechins exhibit anti-inflammatory properties, making it beneficial for sensitive, rosacea-prone, and acne-prone skin, and studies support its use in reducing mild-to-moderate acne. It also demonstrates anticarcinogenic potential by inhibiting UV-induced DNA damage and supporting DNA repair enzymes, as well as antimicrobial activity relevant to acne and atopic dermatitis.
Efficacy is highly dependent on the polyphenol/catechin content of the specific extract used; average commercial extracts may contain as little as 10% catechins, significantly reducing their effectiveness compared to high-quality extracts (50–90% catechins). No specific contraindications are noted in the source.
