TETRAPEPTIDE-54 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-54

Safety grade: A

A peptide made of four amino acids linked together, this ingredient is designed to help improve skin firmness and reduce the appearance of fine lines. It works by signaling skin cells to produce more collagen, supporting the skin's natural structure and elasticity.

Graded using: COSING.

Last verified: June 9, 2026