ACETYL HISTIDINE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

ACETYL HISTIDINE

Safety grade: A

Acetyl Histidine is a modified form of histidine, an amino acid that naturally occurs in the body. It's used in skincare products to help keep skin soft, hydrated, and healthy-looking.

This ingredient works as a moisturizer and skin conditioner by helping the skin retain water and maintain its natural barrier, leaving it feeling smooth and supple.

Graded using: COSING.

Last verified: May 26, 2026