The present invention relates to an aqueous emulsion comprising a) a semifluorinated compound of formula I: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒCF 3 -(CF 2 ) x -(CH 2 ) y -CH 3 €ƒ€ƒ€ƒ€ƒ€ƒ(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 and c) an emulsifier.