Prohibited hair dye
2-[(4-Aminophenyl)azo]-1,3- dimethyl-1H-imidazolium chloride
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A cationic aminophenyl azo hair dye that the EU has effectively prohibited for cosmetic use due to genotoxicity and sensitization concerns associated with aromatic amine azo chemistry.
Skin benefits
- Historically explored as a cationic azo hair dye intermediate
- Provides intense color on keratin substrates
- Soluble in aqueous dye systems
Known concerns
- Aromatic amine azo dye with genotoxicity and sensitization concerns
- Listed among substances prohibited or restricted for cosmetic use in the EU
- Azo cleavage can release carcinogenic arylamines
- Strong skin and respiratory sensitizer in occupational settings
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related prohibited hair dyes
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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.