RH-POLYPEPTIDE-25 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

RH-POLYPEPTIDE-25

Safety grade: A

A protein-based ingredient derived from yeast that helps strengthen and condition skin and hair. It works by forming a protective layer on the surface, improving moisture retention and smoothing the appearance of fine lines. Commonly used in anti-aging and hydrating beauty products.

Graded using: COSING.

Last verified: June 9, 2026