Skip to content

Colorant

BASIC BLUE 6

CAS 966-62-1
25

Safety score · 0–100

Caution

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

A blue phenazine cationic hair dye (Meldola Blue class). Cationic aromatic-amine dyes carry sensitisation and historical safety concerns, so it sits in the red tier.

Function

HAIR DYEING

Skin benefits

  • Strong blue cationic dye for hair colour
  • Vivid hue on hair fibre

Known concerns

  • Cationic phenazine hair-dye class with documented sensitisation
  • Aromatic-amine class linked to historical CMR concerns
  • Limited GHS data; treated cautiously by EU regulators

References

EU

EU CosIng database

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

Related colorants

25
1-Methoxy-3-(β-aminoethyl) amino-4-nitrobenzene, hydrochloride
Colorant
 25
1-Propanol, 3-[[4-[bis(2-hydroxyethyl)amino]-2-nitrophenyl]amino] (see note 17)
Colorant
 25
2,4-DIAMINOPHENOXYETHANOL SULFATE
Colorant
 25
2,6-DIAMINOPYRIDINE
Colorant
 25
2-METHYLRESORCINOL
Colorant
 25
4-Chloro-2-aminophenol, when used as a substance in hair dye products
Colorant
 25
ACID YELLOW 73
Colorant
 25
Acid Red 73 (CI 27290), when used as a substance in hair dye products
Colorant

Same plant / compound family

25
BASIC BLUE 124
Colorant
 22
BASIC BLUE 26
Colorant
 18
BASIC BLUE 3
Colorant
 12
BASIC BLUE 41
industrial dye (non-cosmetic)
 35
BASIC BLUE 47
Colorant
 28
BASIC BLUE 7
Colorant

Check your shelf

Find BASIC BLUE 6 in your products.

Scan any cosmetic product with LuxSense to see if it contains BASIC BLUE 6 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, so always read the physical product label and consult a healthcare professional for personal concerns.