Skip to content

Colorant

HC BROWN NO. 4

Updated
38

Safety score · 0–100

Caution

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

About

A nitro-aromatic brown hair-dye colorant for semi-permanent products. Restricted in the EU due to sensitization and nitrosamine-formation concerns.

Function

COLORANT

Skin benefits

  • Provides brown tone in non-oxidative hair dyes
  • Used at low percentage in finished product

Known concerns

  • HC nitro hair dyes are a flagged class for sensitization
  • Potential nitrosamine formation if formulated with nitrosating agents
  • Restricted in EU Annex III with concentration cap
  • Avoid skin contact during application

References

EU

EU CosIng database

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

Related colorants

38
4-FORMYL-1-METHYLQUINOLINIUM-P-TOLUENESULFONATE
Colorant
 38
AZURITE EXTRACT
Colorant
 38
CI 11725
Colorant
 38
CI 12120
Colorant
 38
CI 12420
Colorant
 38
CI 77346
Colorant
 38
HC VIOLET NO. 2
Colorant
 38
HC VIOLET NO. 3
Colorant

Check your shelf

Find HC BROWN NO. 4 in your products.

Scan any cosmetic product with LuxSense to see if it contains HC BROWN NO. 4 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.