METHIONYL SH-POLYPEPTIDE-11 DECAPEPTIDE-40 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

METHIONYL SH-POLYPEPTIDE-11 DECAPEPTIDE-40

Safety grade: A

This is a lab-created protein fragment designed to boost skin's natural repair processes and improve firmness. It works by signaling skin cells to produce more collagen and elastin, the proteins responsible for keeping skin smooth and elastic. It's commonly found in anti-aging serums and moisturizers.

Graded using: COSING.

Last verified: June 9, 2026