Science
Mechanism of Action
Operates through a multi-pathway approach: it quenches reactive oxygen species (ROS) while inhibiting matrix metalloproteinases (MMPs) to prevent collagen breakdown. Additionally, it down-regulates inflammatory signaling, induces apoptosis in senescent fibroblasts, and protects epidermal immune cells (Langerhans cells) from UV-induced depletion.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 A 2% topical application demonstrated a significant reduction in both inflammatory and non-inflammatory acne lesions over an 8-week period.
- 02 A 5% concentration showed measurable clinical and histological improvements in photoaged skin, specifically reducing UV-induced DNA damage and redness.
- 03 In-vitro studies at 0.4% confirmed protection of immune cells and a reduction in oxidative damage following UV exposure.
Transparency
Dusting Analysis
Often listed as 'Green Tea Extract' at trace levels for marketing; however, clinical efficacy for DNA protection begins at 0.4%, with acne-fighting benefits requiring concentrations closer to 2%.
The Formula
Formulation
Stability
Highly sensitive to oxidation and light. Requires an acidic environment and the inclusion of chelating agents like Disodium EDTA to prevent metal-catalyzed degradation.
Synergies
- Chelating agents
- UV filters
- Vitamin C
- Vitamin E
Conflicts
- Alkaline pH (>7.0)
- Strong oxidizing agents
- Iron ions
- Copper ions
Safety
Safety Profile
Purified catechins are exceptionally well-tolerated, with medical-grade applications reaching up to 15% without significant adverse effects.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A gold-standard botanical antioxidant that provides scientifically validated protection against photoaging, inflammation, and acne at precise concentrations.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources