Antioxidant
SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-9 HEXAPEPTIDE-40)
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A 133-amino-acid recombinant fusion peptide from E. coli combining rainbow trout and human-mimicking peptide domains, intended for antioxidant, skin-protecting, and conditioning uses.
This methionyl-fusion peptide is assembled from three functional domains expressed in E. coli: rainbow trout s-Oligopeptide-1, sh-Polypeptide-9, and Hexapeptide-40. sh-Polypeptide-9 sequences in CosIng are commonly associated with growth-factor mimetics. The recombinant protein is characterised by its defined amino-acid sequence and the absence of post-translational modifications beyond possible disulphide bonding and glycosylation. The ingredient falls under the general provisions of Regulation (EU) 1223/2009 with no specific restrictions applied.
Function
Skin benefits
- Antioxidant capacity
- Skin protecting and humectant activity
- Hair conditioning support
Known concerns
- E. coli endotoxin must be reduced to cosmetic-grade levels
- Fish-derived allergen potential
- Limited post-market safety data
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.