DECAPEPTIDE-39 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

DECAPEPTIDE-39

Safety grade: A

A lab-made protein fragment designed to support skin's natural firmness and elasticity. It works by signaling skin cells to maintain their structural support, helping reduce the appearance of fine lines and sagging over time. This ingredient is often used in anti-aging serums and moisturizers.

Graded using: COSING.

Last verified: June 9, 2026