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Colorant

3,4-METHYLENEDIOXYPHENOL

CAS 533-31-3
8

Safety score · 0–100

Avoid

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

Also known as sesamol — phenolic compound that the EU has banned from hair dye products on the official prohibited hair-dye list. Should not be present in EU cosmetics.

Function

HAIR DYEING

Skin benefits

  • Antioxidant in non-cosmetic chemistry

Known concerns

  • EU-banned for use in hair dye products (Annex II / hair-dye prohibition list)
  • Skin sensitizer
  • Potential mutagenicity flagged in regulatory review
  • Should not appear in EU cosmetic products

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.