Science
Mechanism of Action
Operates as a comprehensive antioxidant shield by quenching reactive oxygen species (ROS) and neutralizing free radicals. It actively protects the dermal matrix by inhibiting matrix metalloproteinases (MMP-1), specifically collagenase and elastase. Furthermore, it modulates inflammatory pathways (NF-kB and MAPK) and provides targeted antimicrobial action against C. acnes by compromising bacterial cell membranes.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 A 12-week clinical assessment demonstrated statistically significant reduction in periorbital and under-eye wrinkles using a 5% concentration.
- 02 Research published in the Journal of Investigative Dermatology confirmed that concentrations between 1% and 5% significantly improved both inflammatory and non-inflammatory acne lesions over 8 weeks.
- 03 Independent 2009 trials validated that a 2% concentration effectively reduces total lesion counts in mild-to-moderate acne cases.
Transparency
Dusting Analysis
While many formulas list Green Tea for marketing purposes, therapeutic benefits for acne and aging are typically only realized at concentrations of 1% or higher. Presence below 0.5% suggests purely antioxidant 'label claims' rather than corrective efficacy.
The Formula
Formulation
Stability
Highly sensitive to environmental factors; stability is maximized between pH 3.5–4.5. Exposure to light, heat, or alkaline environments can lead to oxidation and characteristic browning of the formula.
Synergies
- Sunscreen actives (UV boosting)
- Hyaluronic acid
- Vitamin C (antioxidant network)
Conflicts
- Alkaline ingredients (pH > 7.0)
- Strong oxidizing agents
- Iron and other metal ions
- High-heat processing
Safety
Safety Profile
The 0.86% CIR limit applies specifically to leave-on leaf extracts; however, isolated polyphenols/catechins are considered safe as used without a fixed limit, provided the formula is non-sensitizing.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A top-tier antioxidant and anti-inflammatory agent that provides scientifically-backed benefits for both collagen preservation and acne management.
Related
Similar Ingredients
Finding similar ingredients…