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Hair Conditioning

POLYDIHYDROXYINDOLE

65

Safety score · 0–100

Fine

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

A synthetic melanin-style polymer used for UV-absorbing and colour-conditioning effects. Generally inert as polymer; data is thin so we anchor mid-yellow.

Function

SKIN CONDITIONING

Skin benefits

  • UV-absorbing melanin-mimetic polymer
  • Hair/skin colour conditioning
  • Antioxidant film former

Known concerns

  • Indole/dihydroxyindole monomers are potent reactive species during synthesis
  • Limited finished-cosmetic dossier
  • May stain skin/fabric

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.