RH-POLYPEPTIDE-52 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

RH-POLYPEPTIDE-52

Safety grade: A

RH-Polypeptide-52 is a chain of amino acids (the building blocks of proteins) created through biotechnology. It works to strengthen and protect the skin's natural barrier.

This ingredient helps protect and fortify the skin by reinforcing its natural defense mechanisms and maintaining a healthy skin barrier against environmental stressors.

Graded using: COSING.

Last verified: May 26, 2026