PENTAPEPTIDE-3 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PENTAPEPTIDE-3

Safety grade: A

Pentapeptide-3 is a small chain of amino acids (the building blocks of protein) that is designed to help improve skin texture and firmness. It works by signaling the skin to maintain its structural integrity and elasticity.

This ingredient is used in skincare products to condition and improve the appearance of skin by promoting firmness, smoothness, and overall skin quality.

Graded using: COSING.

Last verified: May 26, 2026