ACETYL TRIPEPTIDE-45 D-PHENYLALANYL OCTAPEPTIDE-14 NORLEUCYL PENTAPEPTIDE-38 METHYL LEUCYL DECAPEPTIDE-26 NORLEUCYL GLUTAMYL METHYL LEUCYL ISOLEUCINAMIDE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

ACETYL TRIPEPTIDE-45 D-PHENYLALANYL OCTAPEPTIDE-14 NORLEUCYL PENTAPEPTIDE-38 METHYL LEUCYL DECAPEPTIDE-26 NORLEUCYL GLUTAMYL METHYL LEUCYL ISOLEUCINAMIDE

Safety grade: A

This is a complex chain of amino acids (the building blocks of proteins) that has been specially engineered in a laboratory. It works as a conditioning agent to help smooth, soften, and improve the overall texture and manageability of hair.

This peptide blend conditions hair by coating the hair shaft, reducing frizz, improving shine, and enhancing softness and combability.

Graded using: COSING.

Last verified: May 26, 2026