NONAPEPTIDE-41 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

NONAPEPTIDE-41

Safety grade: A

This ingredient is a small protein made up of nine amino acids that works to improve skin firmness and elasticity. It helps stimulate the skin's natural support structures, making fine lines appear softer and giving skin a more lifted appearance.

Graded using: COSING.

Last verified: June 9, 2026