RH-POLYPEPTIDE-19 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

RH-POLYPEPTIDE-19

Safety grade: A

This is a lab-created protein that works to strengthen and support your skin's natural structure. It helps improve skin firmness and elasticity by reinforcing the proteins your skin naturally produces. It's commonly used in anti-aging skincare products to help reduce the appearance of fine lines and keep skin looking smoother.

Graded using: COSING.

Last verified: June 9, 2026