ACETYL TETRAPEPTIDE-15 is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

ACETYL TETRAPEPTIDE-15

Safety grade: A

This is a synthetic peptide, which is a small chain of amino acids (the building blocks of proteins) created in a laboratory. It's designed to help improve the skin's appearance and texture.

This ingredient is used in cosmetics to condition and improve skin texture by helping to maintain skin firmness and elasticity.

Graded using: COSING, FDA.

Last verified: May 26, 2026