What it is
Glycol stearate is the ester of ethylene glycol and stearic acid, supplied as a waxy solid. In formulas it softens the skin, helps blend oil and water phases, and is widely used to create a smooth, opaque, pearly finish in creams and lotions. It contributes to a rich texture and stable emulsion in sunscreens and moisturizers.
Safety & warnings
Glycol stearate is generally well tolerated and is not recognized as a common allergen. As a fatty-acid ester it has a low comedogenic profile for most users, though individuals very prone to clogged pores may prefer to monitor heavier fatty-ester formulas.
Origin & sourcing
Glycol stearate is produced synthetically by reacting glycol with stearic acid, the latter often derived from vegetable oils.
Questions everyone asks
What gives some creams a pearly look?
Glycol stearate is often the ingredient that adds an opaque, pearly appearance, in addition to softening the skin and helping stabilize the emulsion.
Is glycol stearate an oil?
It is a waxy fatty-acid ester rather than a liquid oil, used as an emollient, emulsifier, and opacifier.