Science
Mechanism of Action
This extract utilizes a high concentration of flavonoids and tannins to neutralize reactive oxygen species (ROS) and absorb ultraviolet radiation specifically within the 290-320 nm (UVB) spectrum. Furthermore, its antimicrobial properties help regulate the skin microbiome by inhibiting common pathogens such as S. aureus.
Research
Clinical Evidence
High confidence0.2%
Key findings
- 01 Clinical data indicates a 0.2% concentration provides significant photoprotective potential through the absorption of UVB radiation.
- 02 In vitro DPPH assays established an IC50 at 48.96 µg/mL, demonstrating antioxidant performance comparable to pharmaceutical-grade standards.
Transparency
Dusting Analysis
Because it is an effective photoprotective agent at levels as low as 0.2%, brands often include it at 'label-only' concentrations (below 0.05%) to claim antioxidant benefits without providing functional UV protection.
The Formula
Formulation
Stability
The active polyphenols are sensitive to thermal degradation and photo-oxidation. Formulations should be housed in opaque, airtight packaging.
Synergies
- Vitamin E
- Ferulic Acid
- Mineral Sunscreens
Conflicts
- Strong oxidizing agents
- Highly alkaline environments (pH > 8.0)
Safety
Safety Profile
While formal CIR review is pending, the extract shows a high margin of safety with no adverse effects observed in preclinical acute toxicity studies up to 2000 mg/kg.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptional secondary photoprotective agent that enhances the skin's biological resilience against UVB damage and oxidative stress.
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