Abstract: A collapsible hair or massage brush has a body divided into two flat, superposed members in the form of slotted plates or frames which are limitedly relatively shiftable in a predetermined direction to swing a multiplicity of bristle carriers, normally retracted into the body, through substantially 90.degree. into a working position in which their bristles project perpendicularly from one of the body surfaces. The bristle carriers are journaled in one of the members by pivotal axles transverse to the shift direction, these axles being either individual to the respective carriers or common to groups of them lying in parallel rows. The carriers or their axles have coupling formations engaging coacting camming formations on the other member.