L-Glutamine ●
TL;DR. This ingredient is used mainly as a skin and hair conditioning humectant. It helps bind water in the stratum corneum and supports a smoother, more hydrated feel in leave-on and rinse-off formulas.
What does L-Glutamine do in a cosmetic formula?
This ingredient is used mainly as a skin and hair conditioning humectant. It helps bind water in the stratum corneum and supports a smoother, more hydrated feel in leave-on and rinse-off formulas.
Is L-Glutamine clean?
It is generally well tolerated, low in sensitization concern, and not a common clean-standard restricted-list issue. The main quality question is source and purity, especially whether it is fermentation-derived and cosmetic grade.
Is L-Glutamine sustainable?
This material is commonly produced by fermentation from plant-derived sugars, and it is expected to be readily biodegradable. Its sustainability profile depends mostly on agricultural feedstocks, fermentation energy use, and supplier controls.
Is L-Glutamine COSMOS-approved?
It can align with COSMOS-natural and COSMOS-organic when made from approved natural or biotechnological feedstocks and processed with permitted methods. From a Green Chemistry view, it fits well when fermentation-derived, water-soluble, biodegradable, and made without problematic solvent residues.
How does L-Glutamine work chemically?
The molecule is a neutral, polar α-amino acid with an amide side chain, which gives it good water solubility and water-binding behavior. Typical cosmetic use is often in low percentages, roughly 0.01% to 1%, and it is most stable in mildly acidic to neutral water-based systems, with possible deamidation under strong acid, strong base, or prolonged heat.
Last updated 2026-05-14