Abstract: The invention is an improvement in a hairdressing device for the styling, nding and drying of hair. The device includes a handle and a round brush. The round brush includes bristle rows, the bristles of which penetrate an outer tube and, through relative rotary movement between the outer tube and an inner tube, are either extended through the outer tube or lowered onto the surface of the inner tube within the outer tube. The handle is provided with a depressable operating key. Depressing the key turns the tubes through a predetermined angle of rotation relative to each other to achieve retraction of the bristles. A restoring spring interconnects the tubes. When the operating key is released the spring returns the tubes to their starting position and extends the bristles. A locking cam on the key prevents inadvertent retraction.