Colorant
CI 75170
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
The colorant name for guanine — a natural purine that gives that pearly fish-scale shimmer in make-up. EU-permitted as a cosmetic colorant with a strong safety record; main caveat is fish-sourcing.
Skin benefits
- Natural pearlescent pigment (fish-scale guanine)
- Adds opalescent finish to make-up
- Listed permitted EU colorant (Annex IV)
- Biological molecule with no systemic toxicity
Known concerns
- Usually fish-derived — not vegan
- Sourcing and microbiological QC needed
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.