INCI · emollient · CIR review pending · used in 2 products
Polyglyceryl-4 Isostearate
Polyglyceryl-4 Isostearate is an ester formed from polyglycerol (4 mol glycerol average molar ratio) and isostearic acid, chemically described as 1,2,3-propanetriol homopolymer isooctadecanoates (1:1). It is primarily used as an emulsifying agent in cosmetic and personal care formulations. It appears across a wide range of product types including foundations, sunscreens, lip masks, and moisturizers.
Evidence level
weakEWG score
—Comedogenic
—Category
emollient● Benefits
The source identifies Polyglyceryl-4 Isostearate solely as an emulsifying ingredient, meaning it helps blend oil and water phases in formulations to create stable emulsions. No additional skin-benefit claims are supported by the source.
emulsifying
● Cautions
