The invention relates to a brush head for a toothbrush. The brush head has a brush disc (3) mounted in a rotatable fashion on a brush body (2) and a channel (7) with an opening for the application of a cleaning product and a composite part (6) that serves as a valve (12) for opening the channel (7) and as a rotational bearing for the brush disc (3). The composite part (6) comprises a tube (8) made of hard material on the one end thereof and is connected to the channel (7) there. The valve (12), which is made of an elastic material, is disposed on the other end of the composite part (6). The tube (8) of the compound part (6) is connected to the brush body (2) in a stationary fashion, for example, pressed into the brush body (2). The brush disc (3) is mounted in a rotatable fashion on the tube (8). The valve (12) is preferably designed as a slotted valve with a slot (13).