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HC RED NO. 7

CAS 24905-87-1
55

Safety score · 0–100

Moderate

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

About

A synthetic hair dye used to create red tones, but this dye class is more allergy-prone than routine skincare ingredients.

This is a direct or semi-permanent hair dye colorant, and the EU restricts dyes in this class because of irritation and sensitization concerns. HC dyes are not usually major systemic toxicology ingredients in finished products, but they are clearly more reactive than ordinary conditioners or humectants.

Function

HAIR DYEING

Known concerns

  • EU restricts how it can be used
  • May trigger allergic skin reactions
  • Can irritate skin or eyes

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.