The invention relates to a hair treatment composition comprising:- a) from 0.1 to 2 wt.% of selenium disulfide b) from 0.1 to 2 wt.% of zinc pyrithione and, c) from 0.01 to 10 wt.% of a cationic guar hydroxypropyltrimonium chloride polymer and to the use of the composition for the treatment of dandruff.