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Oxidative hair dye precursor (PPD class)

2-(2,2-DIMETHOXY)ETHOXY-P-PHENYLENEDIAMINE

CAS 2839861-10-6
22

Safety score · 0–100

Caution

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

A p-phenylenediamine derivative used as a hair dye precursor. The PPD family is highly regulated due to strong skin sensitization risk and allergy cross-reactivity.

Skin benefits

  • Used as oxidative hair dye intermediate
  • Provides specific color shades in permanent hair color

Known concerns

  • Phenylenediamine class is a known potent skin sensitizer
  • EU restricts PPD derivatives with strict concentration limits
  • Cross-reactivity with PPD allergies common
  • Not suitable for skin-contact products beyond rinse-off hair dye
  • SCCS evaluations highlight allergen risk for this chemical family

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.