Hair Conditioning
SWERTIA JAPONICA POWDER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Powdered Japanese felwort — a traditional hair and scalp botanical valued for bitter iridoids and xanthones.
Swertia Japonica Powder (CAS 94167-11-0) is the dried, ground whole plant of Japanese felwort (senburi), used in Kampo and Japanese folk medicine as a bitter tonic and topical hair-growth aid. Key phytochemicals include swertiamarin and gentiopicroside (iridoid glycosides), xanthones, and flavonoids. It has a notable place in Japanese scalp lotions and hair tonics with a century-plus history. Modern toxicology data are limited but no major safety signals have emerged at cosmetic concentrations. EU CosIng lists it as a hair-conditioning and skin-conditioning agent.
Function
Skin benefits
- Traditional scalp tonic
- Bitter iridoid bioactivity
- Antioxidant xanthones
- Claimed microcirculation support
Known concerns
- Bitter bioactives — limited modern toxicology
- Some potential astringency
- Batch variability
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.