Isoleucine ●
TL;DR. This ingredient is used mainly as a skin and hair conditioning agent, with secondary humectant support because it helps bind water in the outer skin layer.
What does Isoleucine do in a cosmetic formula?
This ingredient is used mainly as a skin and hair conditioning agent, with secondary humectant support because it helps bind water in the outer skin layer.
Is Isoleucine clean?
It is generally well tolerated and has little clean-standard friction, with no common restricted-list issues in rinse-off or leave-on care. Sensitization concern is low, and quality review usually focuses on ordinary fermentation or protein-hydrolysis residue controls.
Is Isoleucine sustainable?
This material is commonly made by fermentation or plant-protein hydrolysis, and it is readily biodegradable. Its environmental profile is favorable when sourced from traceable agricultural feedstocks and manufactured with responsible water and energy controls.
Is Isoleucine COSMOS-approved?
It can be permitted in COSMOS-natural and COSMOS-organic formulas when sourced and processed through approved natural-origin routes such as fermentation or hydrolysis. It aligns well with Green Chemistry principles because it can use renewable feedstocks, mild aqueous processing, and has low persistence after use.
How does Isoleucine work chemically?
This molecule is a neutral amino acid with one carboxyl group, one amino group, and a hydrophobic branched alkyl side chain, so it behaves as a zwitterion around typical skin-care pH. It is usually used at low levels, often about 0.01% to 1%, and is stable in normal water-based formulas without notable oxidation sensitivity.
Last updated 2026-05-13