SR-(SH-POLYPEPTIDE-139 DECAPEPTIDE-7) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-(SH-POLYPEPTIDE-139 DECAPEPTIDE-7)

Safety grade: A

This ingredient is a small chain of amino acids (the building blocks of proteins) designed to help support skin's natural structure and firmness. It works by signaling skin cells to maintain elasticity and smoothness, making it a common choice in anti-aging and lifting skincare products.

Graded using: COSING.

Last verified: June 9, 2026