SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-150 HEXAPEPTIDE-40) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-150 HEXAPEPTIDE-40)

Safety grade: A

This ingredient is a protein-based compound derived from rainbow trout that helps moisturize and condition the skin. It works by forming a protective layer that locks in hydration and may help improve skin texture and firmness in skincare products.

Graded using: COSING.

Last verified: June 9, 2026