SR-(MUSSEL POLYPEPTIDE-1 MUSSEL OLIGOPEPTIDE-1 MUSSEL POLYPEPTIDE-1) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-(MUSSEL POLYPEPTIDE-1 MUSSEL OLIGOPEPTIDE-1 MUSSEL POLYPEPTIDE-1)

Safety grade: A

This ingredient comes from mussels and contains natural protein fragments that help support skin's structure and firmness. When used in skincare products, it works to maintain skin elasticity and promote a smoother appearance over time.

Graded using: COSING.

Last verified: June 9, 2026