Skin Conditioning
KOJYL CARBOXY DIPEPTIDE-23
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A kojic-acid-peptide hybrid used for brightening. Parent kojic acid is a documented sensitizer, so caution at higher use levels.
Kojyl carboxy dipeptide-23 is a synthetic dipeptide conjugated with a kojic acid (kojyl) moiety via a carboxylic linker. Kojic acid is a well-known tyrosinase inhibitor used for skin brightening. The peptide conjugate aims to deliver brightening with improved stability and reduced direct irritation. Free kojic acid has documented contact-sensitization cases at concentrations above 1%, and is restricted in some markets. This specific conjugate is proprietary without independent SCCS or CIR review. Used at low levels in brightening serums. No GHS hazards identified at typical cosmetic use levels.
Function
Skin benefits
- Kojic-acid-peptide conjugate for tyrosinase inhibition and brightening
- Combines peptide signaling with established brightening chemistry
- Low use levels limit sensitization risk
Known concerns
- Kojic acid parent is a known sensitizer at higher use levels
- Limited independent safety data on this specific conjugate
- Efficacy largely supplier-claimed
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related skin conditionings
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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.