RH-POLYPEPTIDE-18 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

RH-POLYPEPTIDE-18

Safety grade: A

A protein-based ingredient that helps skin retain moisture and maintain its structure. It works by forming a protective layer on the skin's surface, which can improve hydration and help reduce the appearance of fine lines. This ingredient is commonly used in anti-aging and moisturizing skincare products.

Graded using: COSING.

Last verified: June 9, 2026