Science
Mechanism of Action
This ingredient functions primarily due to its tannin content, which imparts astringent effects on the skin. Traditional applications also point to antimicrobial and immune-stimulating properties when applied topically, alongside historical use as a salve for sun protection. Its broader cosmetic classification is attributed to its general capacity for skin conditioning.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While the active tannin and phenolic components are water-soluble, the ingredient as a bark powder will also contain insoluble fibrous material. The optimal pH range for stability in cosmetic formulations is not specified, though the source plant prefers acidic environments, typically pH 4.5 to 5.0.
Conflicts
- Its tannin content may react with proteins and specific organic compounds, potentially causing precipitation or discoloration in the final formulation.
Safety
Safety Profile
Comprehensive safety data from regulatory bodies such as CIR or SCCS is currently unavailable, with no determined oral, dermal, or inhalation toxicity. EWG Skin Deep, despite indicating a lack of specific data, rates general concerns for major toxicities (e.g., cancer, allergies, developmental/reproductive) as low.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While traditional uses suggest a range of skin benefits, the absence of modern clinical studies and comprehensive safety assessments renders its cosmetic efficacy and safety profile largely undefined for precision skincare applications.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources