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

NONAPEPTIDE-18

Safety grade: A

This is a short chain of amino acids (the building blocks of proteins) that is created in a laboratory. It works to help keep skin feeling soft and smooth by improving how the skin barrier functions.

This ingredient conditions and softens the skin by helping to strengthen the skin's natural moisture barrier and improve overall skin texture.

Graded using: COSING.

Last verified: May 26, 2026