Science
Mechanism of Action
This ingredient utilizes a high tannin content to exert a mild astringent effect, temporarily tightening the skin matrix and reducing pore visibility. Simultaneously, its rich profile of flavonoids and vitamins A, C, and E neutralizes oxidative stress by scavenging free radicals and reinforcing the lipid barrier through essential mineral delivery.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 Journal of Traditional and Complementary Medicine (2015): Documentation of significant antioxidant and anti-inflammatory pathways.
- 02 SciELO Mexico Review (2024): Evaluation of phenolic content in epidermal protection and historical dermatological applications.
Transparency
Dusting Analysis
While often used for its 'natural' appeal, therapeutic antioxidant benefits require a concentration of at least 1.0%. Formulations including this below 0.5% are likely using it for marketing claims rather than physiological impact.
The Formula
Formulation
Stability
Highly sensitive to thermal degradation and photo-oxidation. It requires cold-process formulation or post-emulsification addition and should be stabilized with chelators and secondary antioxidants like Tocopherol.
Synergies
- Vitamin E
- Chelating agents
- Niacinamide
- Hyaluronic Acid
Conflicts
- Strong oxidizing agents
- Highly alkaline environments (pH > 8.0)
- High-heat manufacturing processes
Safety
Safety Profile
Recognized as GRAS (Generally Recognized As Safe) due to its edible nature; no systemic toxicity reported for topical use within recommended percentages.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A high-performance botanical that bridges the gap between traditional medicine and precision skincare, offering excellent antioxidant protection for all skin types.
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References
Sources