What it is
Glyceryl Diisostearate is an ester formed from glycerin and two units of isostearic acid, giving an oily, skin-conditioning material. It provides emolliency and helps bind oil and water phases, and its texture makes it well suited to anhydrous sticks and balms. It is commonly found in stick-format sunscreens where it contributes a smooth glide.
Safety & warnings
It is generally well tolerated as a skin-conditioning ester. As a fatty-acid ester it is an emollient rich material, so individuals very prone to clogged pores may wish to take note, though it is not a strongly established comedogen.
Origin & sourcing
It is produced by esterifying glycerin with isostearic acid, a branched fatty acid; both starting materials can be sourced from plant oils.
Questions everyone asks
What is Glyceryl Diisostearate used for?
It is an emollient and emulsifier that softens skin and helps blend oil and water phases, often used in stick sunscreens.
Is it derived from plants?
It can be, since it is made from glycerin and isostearic acid, both of which can be sourced from plant oils.