ACETYL PENTAPEPTIDE-1 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

ACETYL PENTAPEPTIDE-1

Safety grade: A

This is a short chain of amino acids (the building blocks of proteins) that has been created in a laboratory. It works to help improve the skin's texture and appearance by supporting the skin's natural protective barrier.

This ingredient is used in cosmetics to condition and soften the skin while helping to improve its overall smoothness and hydration.

Graded using: COSING.

Last verified: May 26, 2026