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Colorant

ACID YELLOW 1

CAS 846-70-8 Updated
55

Safety score · 0–100

Moderate

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

About

A synthetic nitro hair dye (CAS 846-70-8, CI 10316) regulated under EU Annex III with specific permitted uses. Limited to non-oxidative hair-dye applications with concentration caps.

Function

HAIR DYEING

Skin benefits

  • Provides yellow hair colour in rinse-off use

Known concerns

  • EU Annex III: max 1% in rinse-off hair dye
  • Nitro-aromatic class flags
  • Possible sensitiser

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 — always read the physical product label and consult a healthcare professional for personal concerns.