RH-POLYPEPTIDE-20 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

RH-POLYPEPTIDE-20

Safety grade: A

This is a lab-made protein fragment designed to help smooth and firm skin by supporting its natural structure. It works by strengthening the skin's protective barrier and may help reduce the appearance of fine lines. It's commonly used in anti-aging serums and moisturizers.

Graded using: COSING.

Last verified: June 9, 2026