Science
Mechanism of Action
It operates as a targeted lipase inhibitor, which effectively limits the conversion of triglycerides into free fatty acids, thereby controlling sebum production and refining skin texture. Additionally, its high concentration of dimeric flavanols and tannins neutralizes oxidative stress and interrupts the pathways leading to melanin synthesis.
Research
Clinical Evidence
High confidence0.5%
Key findings
- 01 Demonstrated significant enzymatic inhibition (CES, AChE, and GST), confirming its role as a potent bioactive regulator.
- 02 Proven to act as a synergistic booster for melanin-inhibiting actives like Kojic Acid, significantly outperforming single-active treatments.
Transparency
Dusting Analysis
Because it is often used as a 'booster' in marketing, it is frequently included at trace levels below 0.1%. To achieve measurable sebum-regulating or synergistic whitening effects, concentrations should ideally reach at least 0.1-0.5%.
The Formula
Formulation
Stability
Heat-sensitive; stability is compromised at temperatures exceeding 40-50°C. Formulations should be kept in UV-protective packaging to prevent polyphenol degradation.
Synergies
- Kojic Acid
- Vitamin C
- Hydro-alcoholic solutions
Conflicts
- Strong oxidizing agents
- High alkaline environments (pH > 8.0)
Safety
Safety Profile
Extensively utilized in Japanese 'Quasi-Drug' medicated cosmetics, indicating a rigorous profile of safety and tolerance in regulated markets.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptional multi-functional botanical that excels in sebum control and boosting the efficacy of brightening actives.
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