Glyceryl Isostearate ●
TL;DR. This ingredient primarily acts as an emulsifier and emollient, helping oil and water phases stay mixed while giving creams, lotions, and makeup a smoother skin feel.
What does Glyceryl Isostearate do in a cosmetic formula?
This ingredient primarily acts as an emulsifier and emollient, helping oil and water phases stay mixed while giving creams, lotions, and makeup a smoother skin feel.
Is Glyceryl Isostearate clean?
It is generally well tolerated in leave-on and rinse-off formulas, with low irritation concern when used at typical cosmetic levels. Clean-beauty frameworks usually treat it as acceptable when the feedstock and processing route meet their natural-origin criteria.
Is Glyceryl Isostearate sustainable?
This material is commonly made from plant-derived fatty materials and glycerin, though sourcing can vary by supplier. It is expected to be biodegradable and is not associated with the persistence issues seen with many silicone or fluorinated film-formers.
Is Glyceryl Isostearate COSMOS-approved?
It can be permitted under COSMOS-natural and COSMOS-organic when made from approved natural-origin feedstocks using allowed esterification chemistry. Its Green Chemistry profile is strongest when the fatty feedstock is responsibly sourced, the glycerin is plant-derived, and residual catalysts or solvents are tightly controlled.
How does Glyceryl Isostearate work chemically?
The molecule is a glycerin-derived monoester with one branched C18 fatty chain, which gives it both oil compatibility and mild water-interface activity. It is typically used around 0.5% to 5% in emulsions or anhydrous systems, is broadly stable across normal cosmetic pH ranges, and is often paired with stronger emulsifiers or structuring fatty alcohols for emulsion robustness.
Last updated 2026-05-13