Hair dryers

A pulsator for a hair dryer comprising a rotatably mounted generally circular disc which has an open sector to allow air to pass through the disc, a plurality of blades disposed around a peripheral rim of the disc to cause the disc to rotate when air flows past the blades, a housing with a central bearing for supporting the disc and having a number of apertures disposed around an imaginary circle opposite the blades, and a ring member mounted adjacent the housing with a number of protrusions which fit respectively at least partially over the apertures, in which the protrusions of the ring member are arranged to be movable relative to the apertures about the rotational axis of the disc to control the amount of air passing through the apertures so as to alter the speed of rotation of the disc in use.