What it is
This is a high-molecular-weight ester formed from phytosterol and isostearyl alcohol with dimer dilinoleic acid, a branched dimerized fatty acid. Its bulky, viscous structure thickens oil phases, adds a soft cushiony emolliency, and helps bind and disperse pigments. In sunscreens it contributes a smooth, conditioned feel and helps structure rich creams.
Safety & warnings
Heavy fatty-acid esters of this type are generally well tolerated and low in irritation potential. It is a rich, occlusive emollient; tolerance varies by person and by the richness of the overall formula. It is not a fragrance allergen.
Origin & sourcing
Synthetic ester; combines a plant-derived phytosterol with isostearyl alcohol and dimerized linoleic acid.
Questions everyone asks
What is Phytosteryl Isostearyl Dimer Dilinoleate used for?
It is a rich emollient and thickener that adds a soft, cushiony feel and helps bind and disperse pigments in a formula.
Why is it in tinted or color-correcting sunscreens?
Its viscous structure helps hold and evenly disperse pigments while giving the product a smooth, conditioned feel.