SH-POLYPEPTIDE-16 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SH-POLYPEPTIDE-16

Safety grade: A

This is a short chain of amino acids (the building blocks of proteins) that is designed to strengthen and protect the skin's outer layer. It works like a shield to help keep skin healthy and resilient.

This ingredient protects the skin by reinforcing its natural barrier function, helping to defend against environmental stressors and maintain skin integrity.

Graded using: COSING.

Last verified: May 26, 2026