Science
Mechanism of Action
This extract operates through a complex profile of flavonoids and coumarins, including rutin, quercetin, and isofraxidin. It suppresses melanogenesis by inhibiting tyrosinase activity (specifically via Epicatechin Gallate) and modulates the TLR4/NF-κB/MAPK signaling pathways to reduce pro-inflammatory cytokines. Furthermore, it stimulates the expression of Aquaporin-2 and Aquaporin-3 (AQP2/3), strengthening the skin's internal hydration network and barrier integrity.
Research
Clinical Evidence
Medium confidence1.5%
Key findings
- 01 In vitro analysis confirms tyrosinase suppression with an IC50 of 11.3 µM for its ECG component.
- 02 Cellular studies (RAW264.7) demonstrate significant reductions in NO, TNF-α, and IL-1β at concentrations between 25-100 μg/mL.
Transparency
Dusting Analysis
Due to its exotic botanical status and TCM heritage, it is frequently used at 'claim' levels (below 0.1%) to market products as 'natural' or 'traditional' without providing the bioactive tyrosinase inhibition seen at 0.1% or higher.
The Formula
Formulation
Stability
Though stable in aqueous solutions across pH 2.0–8.0, its high flavonoid content is sensitive to photo-oxidation; formulas should be stored in UV-opaque packaging.
Synergies
- Vitamin C
- Niacinamide
- Hyaluronic Acid
Conflicts
- Strong oxidizing agents
- Prolonged heat processing above 60°C
Safety
Safety Profile
Classified as food-grade by the China National Health Commission and has a long history of safe use in treating infantile eczema.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A high-performance botanical that bridges traditional wisdom and precision science, offering validated benefits for both pigmentation and hydration.
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