The diffuser (1) for a pressurized container provided with a valve, in particular for an aerosol generator, includes a base body (10) formed of a concave wall forming a cavity, and having a finger tab (11) intended to be depressed by the user to operate the valve, and a conduit placed in the cavity of the base body (10). The conduit has a first end adapted for cooperating with the valve of the pressurized container, and a second end for the outlet of the product contained in the pressurized container. The outlet conduit and the base body are two distinct parts which are connected together by mechanical fastening. Optionally, the outlet conduit is prevented from rotating relative to the base body.