IsostearylIsostearate ●
TL;DR. This ingredient is primarily an emollient ester that improves slip, cushion, gloss, and skin feel in creams, balms, lip products, and color cosmetics. It can also help disperse pigments and reduce the greasy feel of heavier oils.
What does IsostearylIsostearate do in a cosmetic formula?
This ingredient is primarily an emollient ester that improves slip, cushion, gloss, and skin feel in creams, balms, lip products, and color cosmetics. It can also help disperse pigments and reduce the greasy feel of heavier oils.
Is IsostearylIsostearate clean?
From a clean beauty perspective, it is generally well tolerated, low in sensitization concerns, and not a common restricted-list material. The main quality consideration is feedstock transparency and good control of residual processing impurities.
Is IsostearylIsostearate sustainable?
This material is commonly made from fatty raw materials that may be plant-derived, with palm or other vegetable oil supply-chain considerations depending on the supplier. It is expected to be biodegradable and is not in the same environmental persistence category as many silicone fluids or fluorinated materials.
Is IsostearylIsostearate COSMOS-approved?
It can align with COSMOS-natural when made from approved natural-origin feedstocks and through permitted esterification chemistry, but certification depends on the supplier documentation. From a Green Chemistry view, it scores best when renewable fatty feedstocks, efficient esterification, and low-residue processing are used.
How does IsostearylIsostearate work chemically?
The molecule is a bulky, branched long-chain fatty ester, which explains its spreadability, gloss, pigment-wetting behavior, and relatively non-waxy feel. It is oil-soluble, water-insoluble, broadly stable across typical cosmetic pH ranges, and often used from low single-digit percentages in emulsions to much higher levels in anhydrous balms, sticks, and lip formulas.
Last updated 2026-05-13