3,4-METHYLENEDIOXYPHENOL

Other

5

Avoid

CAS Number: 533-31-3

About 3,4-METHYLENEDIOXYPHENOL

A hair-dye ingredient with sensitization concerns and a poor regulatory profile.

Detailed Analysis

3,4-METHYLENEDIOXYPHENOL is a hair-dye type phenolic ingredient with an EU Annex II prohibition in cosmetics. Even apart from regulation, this class can be irritating and sensitizing, so there is no reason to score it as a routine low-concern ingredient.

What It Does

HAIR DYEING

Known Concerns

  • ⚠ Banned for cosmetic use in the EU
  • ⚠ Hair-dye sensitization concern
  • ⚠ Can irritate skin

Safety Score

5

Avoid

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.