The present invention relates to a composition comprising: a) at least one sebum-absorbing powder with a sebum up-take of greater than or equal to 35 ml/100 g, and/or at least one styling powder b) at least one zinc salt other than the sebum-absorbing powders with a sebum uptake of greater than or equal to 35 ml/100 g, and/or than the styling powders c) optionally a propellant. A subject of the present invention is also to a process for the thy-washing and cosmetic treatment of keratin materials, comprising a step of applying the composition to the hair.