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Pigmentation modulator

DIHYDROXYINDOLE

CAS 3131-52-0
45

Safety score · 0–100

Moderate

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

Dihydroxyindole is a reactive indole used in pigmentation and self-tanning research. It oxidizes readily and lacks robust cosmetic safety review, warranting caution for routine consumer use.

Function

HAIR DYEING

Skin benefits

  • Indole derivative that can act as a melanin precursor
  • Investigated for self-tanning and pigmentation applications
  • May offer antioxidant activity

Known concerns

  • Limited cosmetic safety review
  • Potential skin staining and uneven pigmentation
  • Reactive intermediate prone to oxidation and impurities
  • Structural concerns regarding genotoxic potential of indole derivatives

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.