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Skin Conditioning

PETASITES JAPONICUS LEAF/STEM EXTRACT

CAS 91845-41-9
55

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

Japanese butterbur leaf/stem extract — soothing botanical, but the Petasites genus is famous for hepatotoxic pyrrolizidine alkaloids. Only PA-free grades are appropriate, hence the cautious orange tier.

Function

SKIN CONDITIONING - EMOLLIENT

Skin benefits

  • Anti-inflammatory petasin content
  • Traditional soothing use
  • Antioxidant phenolics

Known concerns

  • Genus contains hepatotoxic pyrrolizidine alkaloids
  • Requires PA-free processing
  • Limited cosmetic-specific safety data

References

EU

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, so always read the physical product label and consult a healthcare professional for personal concerns.