The present invention relates to an aqueous emulsion comprisinga) a semifluorinated compound of formula I: CF3-(CF2)x-(CH2)y-CH3 (I)wherein x is an integer ranging from 1 to 8 and y is an integer ranging from 2 to 10,b) a triglyceride which is miscible with the semifluorinated compound at 20 °C andc) an emulsifier.