Science
Mechanism of Action
The extract operates primarily through high concentrations of catechins, specifically Epigallocatechin Gallate (EGCG), which quench reactive oxygen species and inhibit the MAPK signaling pathway to mitigate inflammation. It further assists in structural preservation by blocking matrix metalloproteinases (MMPs) like collagenase and manages oil at the source by suppressing the 5-alpha-reductase enzyme.
Research
Clinical Evidence
High confidence3%
Key findings
- 01 Significant reduction in acne lesions observed over 8 weeks at 2% concentration.
- 02 Sebum production significantly decreased over a 10-week period using 3% topical application.
- 03 Visible reduction in photoaging markers and UV-induced cellular damage at 5% concentration.
- 04 Photoprotective benefits demonstrated through reduced erythema and fewer 'sunburn cells' at 3%.
Transparency
Dusting Analysis
While frequently listed on labels for marketing appeal, many formulations include it at concentrations below 0.5%. Clinical data suggests that for active acne management or oil control, a minimum threshold of 2% is required to see physiological changes.
The Formula
Formulation
Stability
Highly prone to oxidation which results in a brown discoloration. Stability is maximized in acidic environments (pH < 7.0) and when shielded from light and air.
Synergies
- Vitamin C (L-Ascorbic Acid)
- Chelating Agents
- Broad-spectrum Sunscreen filters
Conflicts
- High pH environments (>7.0)
- Strong oxidizing agents
- Metal ions (Iron, Copper)
- Excessive thermal exposure
Safety
Safety Profile
The CIR max concentration of 0.86% reflects historical leave-on data, though clinical studies have safely utilized up to 5% without adverse effects when formulated to be non-sensitizing.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A gold-standard botanical active that provides scientifically-validated protection against both environmental aging and blemish formation.
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References
Sources