Antioxidant
SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-8 HEXAPEPTIDE-40)
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A 121-amino-acid E. coli fusion peptide pairing rainbow trout sequence with human-mimicking domains, serving antioxidant, skin-protecting, and humectant functions.
This fusion peptide combines rainbow trout s-Oligopeptide-1, sh-Polypeptide-8 (likely a human growth-factor mimetic), and Hexapeptide-40. E. coli expression allows cost-effective manufacturing of recombinant peptides but demands rigorous purification to achieve cosmetic-grade purity. The final peptide contains only standard L-amino acids in the sequence of the 20 canonical amino acids, with no uncommon modifications noted in the CosIng description.
Function
Skin benefits
- Antioxidant activity
- Skin protecting and humectant conditioning
- Hair conditioning
Known concerns
- Endotoxin risk from Gram-negative bacterial host
- Rainbow trout sequence may pose allergen risk for fish-sensitised individuals
- Relatively novel ingredient with limited market history
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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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.