RH-POLYPEPTIDE-105 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

RH-POLYPEPTIDE-105

Safety grade: A

This is a protein-based ingredient made through biotechnology that helps strengthen and firm the skin. It works by supporting your skin's natural structure, making it useful in anti-aging and lifting products. You'll typically find it in serums and creams designed to improve skin elasticity and reduce the appearance of fine lines.

Graded using: COSING.

Last verified: June 9, 2026