The present invention relates to a method of improvement of the water resistance of micronized double coated titanium dioxide particles having an inner inorganic silica coating and an outer silicone coating in a topical composition characterized in that said particles are incorporated into the topical composition the form of a dispersion of said particles in C12-15 alkyl benzoate and polyglyceryl-2 dipolyhydroxystearate. Furthermore, the invention relates to the topical compositions comprising said dispersions as well as to the use thereof as sunscreen.