Antioxidant
PENTAPEPTIDE-27
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A small cysteine-containing peptide used as a mild antioxidant and chelator that helps protect skin from oxidative stress. Considered safe at cosmetic concentrations with no EU restrictions.
Function
Skin benefits
- Cysteine-bearing antioxidant peptide
- Chelates pro-oxidant metals
- Supports skin signaling
- Compatible with most formulas
Known concerns
- Limited independent efficacy data
- Cysteine residue may be oxidation-sensitive
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related antioxidants
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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.