NONAPEPTIDE-5 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

NONAPEPTIDE-5

Safety grade: A

Nonapeptide-5 is a small chain of amino acids (the building blocks of proteins) that is designed to help improve skin texture and appearance. It works by interacting with skin cells to promote a smoother, more refined complexion.

This ingredient is used in skincare products to condition and improve the overall quality of the skin, helping to enhance smoothness and promote a more youthful-looking appearance.

Graded using: COSING.

Last verified: May 26, 2026