LYSINE ●
TL;DR. This ingredient primarily functions as a water-soluble conditioning and humectant component, helping bind water and improve skin or hair feel. It can also contribute mild buffering in aqueous formulas.
What does LYSINE do in a cosmetic formula?
This ingredient primarily functions as a water-soluble conditioning and humectant component, helping bind water and improve skin or hair feel. It can also contribute mild buffering in aqueous formulas.
Is LYSINE clean?
From a clean-beauty perspective, this ingredient is generally well tolerated and not a common restricted-list concern. Sensitization is uncommon, and its main formulation watchout is compatibility with reactive ingredients rather than skin irritation.
Is LYSINE sustainable?
This material is commonly made by microbial fermentation of plant-derived sugars, though the feedstock and energy profile depend on the supplier. It is readily biodegradable and does not raise persistence or bioaccumulation concerns in typical personal-care use.
Is LYSINE COSMOS-approved?
It is generally compatible with COSMOS-natural and COSMOS-organic standards when made through permitted fermentation or other approved natural-source processes. Its renewable feedstock potential, biodegradability, and mild processing profile fit well with Green Chemistry principles.
How does LYSINE work chemically?
The molecule is a basic, water-soluble amino acid that exists mainly as a zwitterion in typical cosmetic pH ranges, with a side-chain amine that gives it cationic character below its high isoelectric point. It is usually used at low levels, often around 0.01% to 1%, and is broadly stable in water, though primary amines can react with aldehydes or reducing sugars under heat or higher-pH conditions.
Last updated 2026-05-13