Histidine

Histidine (CAS 71-00-1) is a naturally occurring amino acid commercially identified by the abbreviations L-HIS, H-HIS-OH, and H-L-HIS-OH, and assigned FEMA number 3694. It carries no E-code designation. It is sourced through fermentation and is available in its biologically active L-form.

In personal care formulations, histidine functions as a film-forming hair and skin conditioner while its imidazole side chain provides pH buffering capacity across a physiologically relevant range. In food and nutraceutical applications, it acts as a humectant and antioxidant, chelating metal ions that would otherwise catalyse lipid oxidation.

Histidine is supplied as a white crystalline powder meeting Ph.Eur., USP, and FCC grade specifications, supporting pharmaceutical, cosmetic, and food-grade procurement requirements. The substance is registered under REACH (EC 200-745-3) and classified under HS code 29332990. Standard packaging includes fibre drums and multi-layer bags.