Abstract: The disclosure provides cosmetic compositions comprising, in a cosmetically acceptable medium, at least one block copolymer comprising at least a first hydrophilic block and at least a second block that is chosen from a second hydrophilic block, wherein the second hydrophilic block is different than the first hydrophilic block, and a hydrophobic block, wherein the hydrophilic block(s) represent at least 30% by weight of the at least one block copolymer, at least one amino silicone, and at least one nonpolymeric thickener chosen from at least one fatty alcohol and at least one amide. The present disclosure also provides uses of the compositions for the disentangling, smoothing, and imparting sheen to keratin fibers such as hair.

Abstract: The invention relates to a composition for dyeing keratin fibres, comprising a physiologically acceptable aqueous medium, comprising: at least one dye bearing at least one ionic group, said dye being present in an amount ranging from 0.001 to 5% by weight relative to the total weight of the composition; at least one block copolymer comprising at least one water-soluble nonionic block and at least one ionic block exhibiting charges opposite to that of the ionic charge borne by the dye.

Abstract: Topically applicable cosmetic/dermatological compositions useful for treating dandruff and/or squamae of the human scalp contain at least one anti-fungal agent selected from the group consisting of pyridinethione salts, 1-hydroxy-2-pyrrolidone compounds, 2,2?-dithiobis(pyridine N-oxide) and selenium sulfides, and mixtures thereof, and at least one wholly hydrophilic block copolymer which comprises at least one polyionic block, formulated into a topically applicable, physiologically acceptable medium therefor.