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Skin Conditioning

POLYGONUM TINCTORIUM LEAF/STEM EXTRACT

Updated
76

Safety score · 0–100

Fine

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

About

Japanese indigo (Polygonum tinctorium) leaf and stem extract — a traditional dye plant whose tryptanthrin and indigo compounds bring anti-inflammatory and antibacterial benefits.

Function

SKIN CONDITIONING

Skin benefits

  • Tryptanthrin and indigo derivatives — anti-inflammatory
  • Antibacterial activity
  • Traditional anti-acne use
  • Plant-derived blue pigment source

Known concerns

  • May leave faint blue tint at high %
  • Limited modern cosmetic toxicology

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