SR-MOUSE POLYPEPTIDE-5 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-MOUSE POLYPEPTIDE-5

Safety grade: A

This is a peptide (small protein chain) derived from mouse cells that's used in skincare products to help support skin firmness and elasticity. It works by signaling skin cells to maintain their structure, potentially reducing the appearance of fine lines. It's commonly found in anti-aging serums and creams.

Graded using: COSING.

Last verified: June 9, 2026