PENTAPEPTIDE-99 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PENTAPEPTIDE-99

Safety grade: A

This lab-created ingredient is a short chain of amino acids designed to support skin firmness and elasticity. It works by signaling your skin to maintain its structural proteins, helping reduce the appearance of fine lines and wrinkles over time with regular use.

Graded using: COSING.

Last verified: June 9, 2026