Colorant
HC BLUE NO. 18
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A direct (non-oxidative) hair dye giving blue tones. The EU SCCS deems it safe at up to 0.35% on-head; rated a moderate sensitiser, so patch testing is recommended.
Function
Skin benefits
- Direct hair dye — blue shade
- Used in oxidative and non-oxidative dyes
- SCCS-cleared at ≤0.35%
Known concerns
- Categorised as moderate skin sensitiser by SCCS
- Hair-dye class — patch test recommended
- Concentration limit applies (0.35% on-head)
- Impurity profile must be controlled
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related colorants
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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.