POLYPEPTIDE-23 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYPEPTIDE-23

Safety grade: A

This is a short chain of amino acids (the building blocks of proteins) that is designed to help improve skin's texture and firmness. It works by mimicking natural proteins found in healthy skin.

This ingredient conditions and smooths the skin by helping to improve elasticity, reduce the appearance of fine lines, and enhance overall skin firmness and tone.

Graded using: COSING.

Last verified: May 26, 2026