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Hair Conditioning

METHYLIMIDAZOLIUMPROPYL P-PHENYLENEDIAMINE HCL

CAS 220158-86-1
28

Safety score · 0–100

Caution

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

A modern oxidative hair dye related to PPD. SCCS approved it up to 2% on-head but explicitly labels it a strong skin sensitiser — patch testing essential.

Function

HAIR DYEING

Skin benefits

  • Oxidative hair color
  • SCCS-restricted use
  • PPD alternative

Known concerns

  • Strong skin sensitiser per SCCS
  • Allergic contact dermatitis risk
  • Strict 2% on-head cap

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.