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Colorant

ACID RED 27

CAS 915-67-3 Updated
22

Safety score · 0–100

Caution

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

About

A monoazo synthetic colorant (CAS 915-67-3, CI 16185 — the same dye as banned food colour Amaranth/E180) restricted to hair-dye use in the EU. Carries azo-class sensitisation and aromatic-amine concerns.

Function

HAIR DYEING

Skin benefits

  • Provides red hair colour

Known concerns

  • EU Annex II/III restrictions
  • Banned as food colour in many regions
  • Azo class genotoxicity concerns

References

EU

EU CosIng database

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

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Acid Orange 24 (CI 20170), when used as a substance in hair dye products
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CI 21100
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CI 44045
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DISPERSE BLUE 7
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DISPERSE VIOLET 4
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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.