An aqueous hair care composition comprising: (i) at least 0.01 wt. % of the total composition of a particulate antidandruff agent； (ii) at least 0.05 wt. % of the addition polymerization product of: a) from 0.1 to 5 wt. % of a first unsaturated monomer A of a ethylenically unsaturated diacid of formula (I): HOOC-CR5=CR6-COOH or an unsaturated cyclic anhydride precursor of such an ethylenically unsaturated cis diacid, the anhydride having formula (II) where R5 and R6 are individually selected from H, C1-C3 alkyl, phenyl, chlorine and bromine； b) from 1 to 60 wt. % of a second ethylenically unsaturated monomer B selected from acrylic acid, methacrylic acid and combinations thereof, c) from 30 to 75 wt. % of a (meth)acrylate monomer C selected from C1 to C8 alkyl esters of (meth)acrylic acid and C1 to C8 alkyl esters of methacrylic acid and combinations thereof from 1 to 25 wt. % of an associative monomer D of the formula (III): Where R1 and R2 are each independently selected from H, and C1-3 alkyl； R3 is C2-C4 and mixtures thereof, preferably C2； m, the average number of alkoxy units R3O, is from 6 to 40； R4 is alkyl or alkylaryl where the alkyl part is linear or branched； and the total number of carbons is from 6 to 40.
