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

RH-POLYPEPTIDE-16

Safety grade: A

This is a lab-created protein that helps cosmetics absorb better into your skin and improve texture. It works by strengthening your skin's outer layer, which can help reduce the appearance of fine lines and keep moisture locked in. You'll find it in serums, moisturizers, and anti-aging products.

Graded using: COSING.

Last verified: June 9, 2026