Histidine ●
TL;DR. This ingredient primarily functions as a skin and hair conditioning agent, with secondary roles in buffering and metal-ion binding that can support formula stability.
What does Histidine do in a cosmetic formula?
This ingredient primarily functions as a skin and hair conditioning agent, with secondary roles in buffering and metal-ion binding that can support formula stability.
Is Histidine clean?
From a clean-beauty perspective, it is generally well tolerated and has little restricted-list friction. Sensitization concerns are low compared with fragrance allergens, reactive preservatives, or strong surfactants.
Is Histidine sustainable?
This material is commonly made by fermentation or other bio-based routes, although synthetic routes also exist. It is water soluble and readily biodegradable, with low persistence concerns in rinse-off and leave-on use.
Is Histidine COSMOS-approved?
It is permitted under COSMOS when sourced and processed through approved natural-origin or fermentation routes, subject to normal formula-level requirements. Its biodegradability, water-based compatibility, and potential bio-based production fit Green Chemistry principles well.
How does Histidine work chemically?
The molecule is a polar essential amino acid with a zwitterionic backbone and an imidazole-containing side chain that can help buffer near mildly acidic to neutral pH. It is typically used at low levels, often below 1%, and pairs well with humectants, electrolytes, and barrier-support blends in water-based systems.
Last updated 2026-05-13