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

HISTIDINE

Safety grade: A

Histidine is an amino acid, which is a building block of proteins found naturally in your body and in many foods. In skincare products, it works to keep moisture in your skin and reduce static electricity in formulas.

This ingredient helps cosmetic products retain moisture on the skin, reduces static buildup in formulas, and conditions the skin to keep it soft and smooth.

Graded using: COSING, FDA.

Last verified: May 26, 2026