TETRAPEPTIDE-115 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-115

Safety grade: A

This lab-created protein fragment is designed to help reduce the appearance of fine lines and wrinkles by supporting your skin's natural structure. It works by signaling skin cells to boost their own protective processes, helping your complexion look smoother and more firm over time.

Graded using: COSING.

Last verified: June 9, 2026