Science
Mechanism of Action
This ingredient operates via a dual-action pathway: it inhibits the enzymatic breakdown of the extracellular matrix by neutralizing collagenase and hyaluronidase, while simultaneously stimulating keratinocyte maturation. Rich in hydroxycinnamic acids and flavonoids like rutin, it provides robust antioxidant protection and facilitates the synthesis of essential membrane lipids to fortify the epidermal barrier.
Research
Clinical Evidence
High confidence1%
Key findings
- 01 In vitro trials demonstrated >90% inhibition of collagenase and 100% hyaluronidase inhibition at specific concentrations, alongside accelerated wound closure.
- 02 Cosmetic patent data confirms significant improvements in skin barrier function and epidermal differentiation at concentrations between 1% and 5%.
Transparency
Dusting Analysis
While this ingredient is effective at very low concentrations (0.05%) for enzyme inhibition, many commercial formulas include it at trace amounts purely for label claims. A concentration below 0.05% is considered 'dusting' and unlikely to provide physiological benefits.
The Formula
Formulation
Stability
Highly thermolabile; must be incorporated during the cooling phase (under 40°C). Sensitive to photodegradation and alkaline environments (pH >8).
Synergies
- Hyaluronic Acid
- Vitamin C
- Ceramides
Conflicts
- Strong oxidizing agents
- High pH formulations
- Excessive heat
Safety
Safety Profile
Recognized as safe based on its long-standing use in South African ethnomedicine and lack of cytotoxicity in human cell assays up to 1 mg/mL.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A high-performance botanical active that offers sophisticated enzyme protection and barrier reinforcement for all skin types.
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References
Sources