(EN) A fully dilutable in aqueous phase self-microemulsifying system for the delivery of one or more polar oil active compounds having a positive characteristic curvature (Cc), comprising: a lecithin compound; a hydrophilic linker or a combination two or more hydrophilic linkers, the hydrophilic linker or the combination of two or more hydrophilic linkers having one having one hydrocarbon group with 6 to 10 carbon atoms, and the hydrophilic linker or the combination of two or more HLs having a Cc of about -5 or more negative than about -5; and a carrier oil.