ACETYL HEPTAPEPTIDE-4 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

ACETYL HEPTAPEPTIDE-4

Safety grade: A

This is a laboratory-created protein fragment made up of seven amino acids linked together. It's designed to help skin retain moisture and improve its overall texture and appearance.

This ingredient works as a humectant to draw moisture into the skin and conditions the skin barrier, helping it feel softer, smoother, and better hydrated.

Graded using: COSING.

Last verified: May 26, 2026