Polyglyceryl-3 Diisostearate Bon Émollient Hydratation Polyglyceryl-3 Diisostearate at a glance Used as an emollient, surfactant, and emulsifier According to its manufacturers, gentle enough for sensitive skin Ruled safe as used in cosmetics Is a yellow liquid in its raw form Polyglyceryl-3 Diisostearate description Polyglyceryl- 3 diisostearate is a diester (groups of carbon bound to other atoms) that is used as an emollient (moisturizing ingredient) and surfactant in cosmetics. According to one of its suppliers, it helps emulsify oil and water mixtures, and is gentle enough for use on sensitive skin. In its raw form, it is a light yellow liquid, used in concentrations in leave-on products as high as 39%. The independent Cosmetic Review Panel has found polyglyceryl 3 diisostearate to be non-sensitising and safe as used in makeup, skin care, and hair care products. Related ingredients: Isostearic Acid Stearic Acid