Beschrieben wird die Verwendung von einem oder mehreren Estern von Monoglyceriden und/oder Diglyceriden von in Sonnenblumenöl vorliegenden Fettsäuren mit Citronensäure, wobei die Ester ganz oder teilweise neutralisiert sein können, als W/O-Emulgator.Use of one or more esters of monoglyceride and/or diglyceride of sunflower oil containing fatty acid with citric acid, where the ester is completely or partially neutralized, as water/oil (W/O) emulsifier, is claimed. Independent claims are included for: (1) a water/oil emulsion comprising at least one water phase, emulsified in at least one oil phase, and at least one water/oil emulsifier and (2) a cosmetic or pharmaceutical composition comprising the W/O emulsion. ACTIVITY : Dermatological Vulnerary. MECHANISM OF ACTION : None given.