Stable UV-photoprotective, phase inverted oil-in-water emulsions, well suited for the photoprotection of the skin, lips and/or hair, the average size of the globules which constitute the oily phase thereof ranging from 100 nm to 1,000 nm, contain inorganic metal oxide nanopigments and at least one organic UV-screening agent, and which also contain at least one organic 4,4-diarylbutadiene UV-A-screening agent.