Science
Mechanism of Action
This extract functions as an anti-hyperpigmentation agent primarily by inhibiting tyrosinase, a pivotal enzyme in the melanin synthesis pathway. Its antioxidant activity is attributed to free radical scavenging. Furthermore, it exhibits direct antibacterial action against Propionibacterium acnes, and is recognized for its potential as a UV filter.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Significant anti-tyrosinase activity (in vitro).
- 02 Significant inhibition (20%) of melanin production by melanocyte cells (in vitro).
- 03 Antioxidant activity via DPPH radical scavenging (in vitro).
- 04 Activity against Propionibacterium acnes (in vitro).
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Typically prepared as an ethanolic extract. Specific optimal pH range and detailed stability guidelines are not available, though general plant extract stability is influenced by factors such as pH, temperature, and storage conditions.
Safety
Safety Profile
No specific safety assessments from CIR, SCCS, or FDA were found. In vitro studies indicated low levels of cytotoxicity in melanocyte cells (IC50 < 400 μg/ml). A related species, Greyia radlkoferi, was reported as non-mutagenic at 5.0 mg/ml, suggesting a potentially low toxicity profile within the genus, although direct human safety data for Greyia Flanagan Leaf Extract is limited.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Greyia Flanagan Leaf Extract is a valuable botanical active, demonstrating promising in-vitro benefits for hyperpigmentation, antioxidant protection, and acne management, making it suitable for targeted skincare formulations.
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References
Sources