Science
Mechanism of Action
It utilizes a dual-action pathway: physically, the finely milled powder provides controlled abrasion to lift dead corneocytes; biochemically, its rich profile of polyphenols and tannins (such as scoparone) acts as a natural astringent and enzymatic inhibitor. By suppressing elastase and tyrosinase, it helps preserve skin elasticity and inhibit melanin-related discolorations while regulating sebum production.
Research
Clinical Evidence
Medium confidence3%
Key findings
- 01 Upregulation of fibronectin and vitronectin in fibroblasts, indicating improved cell adhesion and structural integrity (anti-wrinkle potential).
- 02 Demonstrated significant reduction in pore diameter and improved oil-moisture balance in the U-zone.
Transparency
Dusting Analysis
Often included in marketing claims for its 'K-beauty' botanical appeal at trace amounts (<0.1%) where it offers no exfoliating benefit. For therapeutic astringent or physical exfoliation effects, concentrations should ideally exceed 1%.
The Formula
Formulation
Stability
Physically stable in oil-in-water emulsions and surfactant systems. The raw extract is naturally acidic (pH 4.3–4.8), making it highly compatible with skin-neutral formulations (pH 5.2–5.7).
Synergies
- Microneedling (MTS) for enhanced hydration
- Glycerin
- Niacinamide
Conflicts
- High-dose AHAs/BHAs (potential for over-exfoliation)
- Strong oxidizing agents
Safety
Safety Profile
Generally recognized as safe due to its food-grade byproduct origin; however, its CIR status is currently unreviewed as a standalone cosmetic ingredient.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An excellent botanical alternative to synthetic scrubs that provides added value through enzyme inhibition and pore-refining astringency.
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References
Sources