Provided is an inorganic particle dispersion, in particular, an inorganic particle dispersion for cosmetics, said inorganic particle dispersion containing a novel block copolymer capable of improving the dispersibility of inorganic particles. The inorganic particle dispersion, in particular, inorganic particle dispersion for cosmetics according to the present invention comprises a dispersion medium, inorganic particles dispersed in the dispersion medium and a block copolymer having a hydrophobic segment and a hydrophilic segment, wherein the hydrophobic segment has a monomer unit formed of at least one kind of monomer selected from formula 1 and formula 2, the hydrophilic segment is at least partly adsorbed by the inorganic particles, and the hydrophobic segment is arranged outside of the inorganic particles. In formula 1, R1 represents hydrogen or a methyl group, R2 represents hydrogen or fluorine, m is an integer of 0-6, and n is an integer of 1-15. In formula 2, R1 represents hydrogen or a methyl group, R3 and R4 independently represent an alkyl group having 1-6 carbon atoms, m is an integer of 1-6, and p is an integer of 5-70.L'invention concerne une dispersion de particules inorganiques, en particulier une dispersion de particules inorganiques pour produits cosmétiques, ladite dispersion de particules inorganiques contenant un nouveau copolymère séquencé capable d'améliorer la dispersibilité de particules inorganiques. La dispersion de particules inorganiques, en particulier, une dispersion de particules inorganiques pour des produits cosmétiques selon la présente invention comprend un milieu de dispersion, des particules inorganiques dispersées dans le milieu de dispersion et un copolymère séquencé ayant un segment hydrophobe et un segment hydrophile, le segment hydrophobe ayant une unité monomère formée d'au moins un type de monomère choisi parmi la formule 1 et la formule 2, le segment hydrophile étant au moins partiellement adsorbé par les particules inorga
