The present invention concerns a composition in the form of an oil-in-water emulsion containing, in a cosmetically acceptable medium, a mixture of composite particles comprising: a) at least spherical composite particles A with a mean size of between 0.1 and 30 µm comprising a matrix and an inorganic UV-screening agent, the content of inorganic screening agent in a particle ranging from 1% to 70% by weight, b) at least non-spherical composite particles B with a mean size of between 0. and 30 µm comprising a matrix and an inorganic UV-screening agent, the content of inorganic screening agent in a particle ranging from 1% to 70% by weight.