Ingredient Guide

Epigallocatechin Gallatyl Glucoside (EGCG)

Also known as: Epigallocatechin Gallatyl Glucoside, EGCG, Epigallocatechin Gallate, Green Tea Polyphenol

All skin types

What It Is

A stabilized, water-soluble glucoside derivative of EGCG (epigallocatechin gallate) — the most potent polyphenol antioxidant found in green tea. The glucoside form enhances stability and bioavailability compared to raw EGCG.

What It Does

Provides powerful antioxidant protection against free radical damage, reduces inflammation, and supports skin defense against environmental stressors. Used in eye serums for its combination of antioxidant and anti-inflammatory benefits in the delicate eye area.

Best For

Antioxidant protectionUnder-eye careInflammation reductionEnvironmental defense

Benefits

  • One of the most potent natural antioxidants — more powerful than vitamin C or E in certain oxidative stress models
  • Anti-inflammatory — reduces redness and irritation markers
  • Stabilized glucoside form has better shelf-life than raw EGCG
  • Complements caffeine in the eye area for a dual antioxidant + vasoconstrictive approach

When to Be Careful

  • Research is promising but much is in vitro — human clinical data specific to topical EGCG derivatives is still developing
  • Not a standalone dark circle fix — works as part of a multi-ingredient formula
ItGirlies Ingredient Intelligence
Why This Gets Hype

Green tea extract and its polyphenols are among the most studied natural antioxidants. EGCG is the star compound — and a stabilized glucoside version that works in an aqueous formula is an impressive formulation achievement.

What People Often Misunderstand

EGCG alone won't "cure" dark circles. Dark circles from pigmentation, genetics, or thin skin require a very different approach. EGCG works best as an antioxidant booster in a comprehensive under-eye formula.

Best Routine Slot

Morning eye serum step — antioxidant protection is most needed during the day when environmental exposure is highest.

Good Match For

Caffeine (shared antioxidant + vasoconstrictive effects), Vitamin E, Hyaluronic Acid

Proceed Carefully If…

Very rare sensitivity to green tea polyphenols — patch test if highly reactive to botanical extracts.

Signs You May Be Overdoing It

Antioxidants are generally hard to "overdo" topically — unlikely to cause irritation even with daily use.

Commonly Found In

Eye serumsAntioxidant serums

Products Containing Epigallocatechin Gallatyl Glucoside (EGCG)

Caffeine Solution 5% + EGCG
The Ordinary
Soothing & Barrier Support Serum
The Ordinary
Multi-Antioxidant Radiance Serum
The Ordinary

FAQs About Epigallocatechin Gallatyl Glucoside (EGCG)

What is EGCG in skincare?
EGCG (epigallocatechin gallate) is the main active polyphenol in green tea and one of the most potent natural antioxidants used in skincare. The glucoside form (EGCG-G) is stabilized for use in water-based formulas.
Why is EGCG in eye serums specifically?
The eye area is particularly exposed to free radical damage from UV and environmental stress. EGCG's combination of antioxidant and anti-inflammatory effects makes it well-suited to this delicate, thin-skinned zone.
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