Skip to content

Colorant

CI 27755

CAS 2118-39-0 Updated
30

Safety score · 0–100

Caution

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

About

A black azo dye (Food Black 2) — allowed as a cosmetic colorant under EU Annex IV with restrictions but banned in hair dye products under Annex II 1379 due to safety concerns.

Skin benefits

  • Strong black coloration for permitted products
  • Stable in formulation

Known concerns

  • Banned in EU hair dye products (Annex II 1379)
  • Aromatic azo dye — potential degradation to questionable amines
  • Use only in EU Annex IV-permitted product types
  • Avoid in leave-on cosmetics

References

EU

EU CosIng database

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

Related colorants

30
2,3-Dihydro-1H-indole-5,6-diol and its hydrobromide salt (see note 17).
Colorant
 30
2,3-Naphthalenediol, when used as a substance in hair dye products
Colorant
 30
2-HEXYLOXYCARBONYL-P-PHENYLENEDIAMINE HCL
Colorant
 30
4-NITROGUAIACOL
Colorant
 30
ACID GREEN 1
Colorant
 30
ACID ORANGE 6
Colorant
 30
ACID RED 92
Colorant
 30
ACID VIOLET 9
Colorant

Check your shelf

Find CI 27755 in your products.

Scan any cosmetic product with LuxSense to see if it contains CI 27755 and get a full ingredient breakdown with safety scores.

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.