Colorant
PHYCOERYTHRIN
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A red photosynthetic protein (CAS 11016-17-4) isolated from red algae, used as a natural colorant and mild antioxidant in cosmetic formulations. Generally well tolerated with minimal documented topical safety concerns.
Skin benefits
- Natural red protein colorant from red algae
- Provides antioxidant activity in formulations
- 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 seafood-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.