Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate Good Emulsifier No known benefits Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate at a glance Polymer of plant-sourced ingredients Functions as an emulsifier Gives products a smooth texture Ruled safe as used in cosmetics Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate description Polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate is a polymer made up of plant-sourced isostearic, polyhydroxystearic, and sebacic acids combined with polyglycerin-4. It is also known by the trade name ISOLAN ® GPS. In cosmetics, its primary function is as an emulsifier, specifically a stabilizing emulsifier, that lends formulas a smooth, velvety texture. The independent Cosmetic Ingredient Review has ruled polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate safe in its current usage in cosmetics. Typical use levels in cosmetics and sunscreen products range from 1.5–5%. Related ingredients: Sebacic Acid Isostearic Acid Polyhydroxystearic Acid