SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-66 HEXAPEPTIDE-40) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-66 HEXAPEPTIDE-40)

Safety grade: A

This ingredient is a protein complex derived from rainbow trout that helps support skin's natural moisture barrier and firmness. It works by delivering amino acids and peptides to the skin, potentially improving texture and hydration when used in skincare products.

Graded using: COSING.

Last verified: June 9, 2026