PENTAPEPTIDE-31 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PENTAPEPTIDE-31

Safety grade: A

This is a short chain of amino acids (the building blocks of proteins) created in a laboratory. It's designed to help improve the skin's texture and appearance by supporting its natural structure.

This ingredient conditions and improves the skin by helping to maintain firmness, elasticity, and overall skin quality.

Graded using: COSING.

Last verified: May 26, 2026