The present invention relates to UV-stabilised particles which are distinguished by the fact that they reflect or absorb light having wavelengths of from 290 to 500 nm. The invention furthermore relates to a process for the production of the particles according to the invention and to the use thereof in surface coatings, water-borne coatings, powder coatings, paints, printing inks, security printing inks, plastics, concrete, in cosmetic formulations, in agricultural sheeting and tent awnings, for the laser marking of papers and plastics, as light protection, and for the preparation of pigment compositions and dry preparations.