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Colorant

HC YELLOW NO. 2

CAS 4926-55-0
50

Safety score · 0–100

Moderate

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

A nitro hair-dye colorant approved at low %. Reviewed by SCCS and CIR; safe within tight limits but carries irritation and sensitization concerns.

Function

HAIR DYEING

Skin benefits

  • Approved hair dye colorant
  • Stable color in hair products
  • SCCS-reviewed safety profile

Known concerns

  • GHS H302 harmful if swallowed
  • H319 eye irritation
  • Sensitization risk in repeat exposure
  • Restricted to ≤1% non-oxidative, ≤0.75% oxidative

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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Same plant / compound family

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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.