Green Tea Extract
Source of polyphenols, the main one being EGCG (epigallocatechin-3-gallate). An antioxidant, anti-inflammatory, and photoprotective agent.
Evidence by route
Topical application
Antioxidant and photoprotective activity of EGCG is well documented in vitro and in small clinical studies. EGCG stability in formulas is problematic: it oxidizes in air. No large RCTs for anti-aging effects.
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Oily, Normal, Combination, Sensitive, Dry
About this ingredient
Green tea extract (Camellia Sinensis Leaf Extract) is obtained from tea bush leaves. Contains polyphenol catechins: epigallocatechin-3-gallate (EGCG, up to 50%), epicatechin, epigallocatechin. Also caffeine, theanine, flavonoids. Mechanism. Antioxidant: scavenges hydroxyl and peroxyl radicals. Anti-inflammatory – inhibits COX-2, NF-κB. Photoprotective – reduces thymine dimer formation and photopigmentation after UV. Antimicrobial against Cutibacterium acnes and Staphylococcus aureus. Where applied. Antioxidant serums and creams, acne products, post-procedure formulations, sunscreens (1-5% extract or 0.1-1% EGCG). In Spain in Sesderma, Mesoestetic, Endocare, ISDIN. Evidence base. Yoon 2010 (J Eur Acad Dermatol Venereol) RCT in 40 patients over 8 weeks with 2% EGCG: sebum reduction by 32%, acne papules by 58%. Camouse 2009: topical green tea polyphenol extract before and after UV reduces thymine dimer formation by 66%. Cochrane Review 2020 in actinic keratosis – EGCG formulas as imiquimod adjunct. Safety. CIR/SCCS confirm safety. Hypoallergenic. Non-comedogenic. Does not photosensitize. Rare contact reactions possible in very sensitive skin. Pregnancy and lactation – safe topically at cosmetic concentrations. Systemically high EGCG doses in supplements may cause hepatotoxicity – but topical systemic absorption is minimal.
Frequently asked questions
Is Green Tea Extract safe during pregnancy?
Green Tea Extract is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Green Tea Extract for?
Green Tea Extract suits: oily, normal, combination, sensitive, dry.
What is Green Tea Extract and what does it do in cosmetics?
Source of polyphenols, the main one being EGCG (epigallocatechin-3-gallate).
What's the INCI name for Green Tea Extract?
The INCI name is Camellia Sinensis Leaf Extract. It may also appear as: Camellia Sinensis (Green Tea) Leaf Extract.
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