PENTAPEPTIDE-5 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PENTAPEPTIDE-5

Safety grade: A

Pentapeptide-5 is a small chain of amino acids (the building blocks of proteins) that is designed to help improve skin texture and firmness. It works by signaling skin cells to produce more supportive proteins naturally.

This ingredient is used in skincare products to condition and improve the appearance of skin by promoting a smoother, firmer complexion and supporting the skin's natural structure.

Graded using: COSING.

Last verified: May 26, 2026