Abstract: There is provided a collapsible brush structure comprised of a body portion, a bristle bed movable in the longitudinal direction of the body, a plurality of bristles being set in the bristle bed, and means for moving the bristle bed between first and second positions whereby the bristles are in an erect condition and a flattened condition respectively. A feature of the structure is the provision of rotatable guide means through which the bristles pass, the guide means functioning to clean the bristles whenever they are moved from the erect condition to the flattened condition. The brush structure is a very compact one and can easily be carried in a pocket of the user.