Science
Mechanism of Action
The extract operates through high concentrations of epigallocatechin gallate (EGCG) to neutralize reactive oxygen species (ROS) and inhibit matrix-degrading enzymes, specifically collagenase, elastase, and hyaluronidase. It further modulates the skin's inflammatory response by reducing pro-inflammatory cytokines and provides secondary antimicrobial support.
Research
Clinical Evidence
High confidence1%
Key findings
- 01 Concentrations between 0.8% and 1.25% provide significant neutralization of UV-induced free radicals.
- 02 In-vitro assays (IC50 of 28.10 μg/mL) demonstrate antioxidant capacity superior to L-ascorbic acid.
- 03 Commercial usage levels of 1.0% to 5.0% are established for achieving measurable anti-inflammatory and anti-aging effects.
Transparency
Dusting Analysis
Many mass-market formulations include this extract at trace levels (below 0.1%) for 'label claim' purposes. Clinical data suggests a minimum threshold of 0.8% is required to effectively provide the antioxidant protection advertised.
The Formula
Formulation
Stability
Highly thermally stable up to 85°C and resilient across a broad pH spectrum. Extraction via hydro-ethanolic or aqueous methods is preferred to preserve polyphenol integrity.
Synergies
- Chelating agents (e.g., EDTA) to prevent metal-induced discoloration
- UV filters for enhanced photoprotection
Conflicts
- Strong oxidizing agents
- Unchelated metal ions
Safety
Safety Profile
The CIR Expert Panel designates it safe up to 0.86% in leave-on products, provided the formulation is non-sensitizing. It shares a similar safety profile to Camellia Sinensis.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptionally stable botanical antioxidant that offers superior free-radical scavenging and enzymatic protection for all skin types.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources