CI 73000
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A permitted indigo dye used in cosmetic formulations to achieve blue and violet tones in hair dye and decorative products.
CI 73000 (Indigo, synthetic) is listed in EU Annex IV (ref IV/98) as a permitted cosmetic dye for hair dyeing and decorative cosmetics. The dye conforms to specified chemical formula requirements under CosIng. When used within approved applications and concentration limits, it is considered safe with no sensitization warnings.
Skin benefits
- Provides blue-violet coloration in hair dyes and decorative cosmetics
References
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 — always read the physical product label and consult a healthcare professional for personal concerns.