Skip to content

Colorant

ACID RED 73

CAS 5413-75-2 Updated
35

Safety score · 0–100

Caution

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

About

A red sulfonated azo dye (CI 27290) used in oxidative hair colors. EU only allows it for brief skin contact, and toxicology shows it is more hazardous than several similar acid dyes.

Function

HAIR DYEING

Skin benefits

  • Provides red hair-dye color
  • Restricted use approved in EU brief-contact
  • Stable sulfonated azo chromophore

Known concerns

  • Sulfonated azo dye with toxicity signals
  • EU restricts to brief skin contact only
  • Not for leave-on cosmetics

References

EU

EU CosIng database

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

Related colorants

35
1,3-Benzenediol, 4-Chlororesorcinol
Colorant
 35
2-AMINO-4-HYDROXYETHYLAMINOANISOLE
Colorant
 35
2-Amino-4,6-dinitrophenol and 2- amino-4,6-dinitrophenol, sodium salt
Colorant
 35
3-METHYLAMINO-4-NITROPHENOXYETHANOL
Colorant
 35
5-AMINO-4-FLUORO-2-METHYLPHENOL SULFATE
Colorant
 35
5-AMINO-6-CHLORO-O-CRESOL
Colorant
 35
6-AMINO-M-CRESOL
Colorant
 35
ACID BLACK 52
Colorant

Check your shelf

Find ACID RED 73 in your products.

Scan any cosmetic product with LuxSense to see if it contains ACID RED 73 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.