SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-50 HEXAPEPTIDE-40) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-(METHIONYL S-RAINBOW TROUT OLIGOPEPTIDE-1 SH-POLYPEPTIDE-50 HEXAPEPTIDE-40)

Safety grade: A

This cosmetic ingredient is derived from rainbow trout and contains small protein fragments that help support skin's natural moisture barrier. It's used in skincare products to help improve hydration and promote smoother, more resilient skin texture.

Graded using: COSING.

Last verified: June 9, 2026