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Hair dye

HC RED NO. 13

CAS 94158-13-1
35

Safety score · 0–100

Caution

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

A red semi-permanent hair dye allowed in the EU only under strict conditions, including nitrosamine limits and a ban on combining with nitrosating agents. It is restricted, not freely usable.

Skin benefits

  • Provides red shades in non-oxidative hair colour formulations
  • Approved in the EU for hair dye use under defined restrictions

Known concerns

  • Tertiary amine that must not be combined with nitrosating agents to avoid carcinogenic nitrosamine formation
  • Maximum nitrosamine content tightly restricted (less than 50 ppb)
  • Regulated under Annex III of EU Cosmetics Regulation with concentration limits
  • Hair dyes are common sensitisers and require patch testing
  • Not suitable for use near the eyes or on broken skin

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.