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Colorant

Disodium 2,2'-(9,10-dioxoanthracene-1,4-diyldiimino)bis(5-methylsulphonate)

CAS 4403-90-1 Updated
30

Safety score · 0–100

Caution

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

About

Acid Green 25 — an anthraquinone hair dye restricted under EU Annex III. Recognised sensitizer; only permitted in salon hair color within capped levels.

Skin benefits

  • Provides green shade in hair color

Known concerns

  • EU Annex III restricted hair dye
  • Anthraquinone dye class concerns
  • Sensitizer
  • Concentration cap

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.