Colorant
PHYCOCYANIN
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A vivid blue phycobiliprotein (CAS 11016-15-2) extracted from spirulina and similar algae, used as a natural colorant and mild antioxidant. Generally well tolerated with no significant documented topical concerns.
Skin benefits
- Natural blue colorant from spirulina and related algae
- Provides antioxidant activity
- Water-soluble and easy to use in skincare
- Biodegradable, renewable source
Known concerns
- Sensitive to heat and pH — colour stability is limited
- Theoretical allergenic potential for highly algae-sensitive individuals
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.