Skin Conditioning
BIOTINOYL ISOLEUCYL PENTAPEPTIDE-121
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A biotin-conjugated isoleucyl pentapeptide marketed for skin signaling. There is no published independent safety data, so the score sits in the lower Fine band by default.
Skin benefits
- Biotin-conjugated peptide
- Designed signaling claim
- Low typical use concentration
- Lipophilic biotin tail aids penetration
Known concerns
- No published independent toxicology for this peptide
- Marketing claims commonly outpace evidence
- Vitamin-conjugated peptides are proprietary and opaque
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, so always read the physical product label and consult a healthcare professional for personal concerns.