PENTAPEPTIDE-9 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PENTAPEPTIDE-9

Safety grade: A

Pentapeptide-9 is a small chain of amino acids (the building blocks of proteins) created in a laboratory. It's designed to help improve skin texture and firmness by supporting the skin's natural structural proteins.

This ingredient conditions and supports the skin by promoting collagen production and improving skin elasticity, resulting in firmer, smoother-looking skin.

Graded using: COSING.

Last verified: May 26, 2026