Lysine HCI ●
TL;DR. This ingredient functions mainly as a humectant and skin or hair conditioning amino acid salt, helping bind water and improve the feel of aqueous formulas.
What does Lysine HCI do in a cosmetic formula?
This ingredient functions mainly as a humectant and skin or hair conditioning amino acid salt, helping bind water and improve the feel of aqueous formulas.
Is Lysine HCI clean?
It is generally well tolerated, low in sensitization concern, and not a common restricted-list ingredient in clean-beauty standards. The main documentation point is source and processing route rather than consumer-safety controversy.
Is Lysine HCI sustainable?
This material is commonly made from plant sugars through fermentation, then converted to a stable salt form. It is water soluble, readily biodegradable, and not associated with persistence or bioaccumulation concerns.
Is Lysine HCI COSMOS-approved?
It is generally compatible with COSMOS natural formulations when the feedstock and processing route meet the standard’s natural-origin requirements, with organic eligibility depending on certification documents. From a Green Chemistry view, fermentation sourcing, biodegradability, and low use levels are favorable.
How does Lysine HCI work chemically?
The molecule is a water-soluble salt of a basic alpha-amino acid, with amino and carboxyl groups plus a protonated side-chain amine, so it behaves as a zwitterionic to cationic osmolyte in water. Typical cosmetic use is low, often around 0.1% to 2%, and it is stable across normal cosmetic pH ranges, though high heat with reducing sugars can promote amino-carbonyl browning.
Last updated 2026-05-16