Abstract: An assembly for aerosol spraying a liquid product contained in a container includes a container of the disposable type containing only the liquid product to be aerosol sprayed and means for feeding into the container pressurised air with a constant pressure. The container includes a case on which an aperture is formed for feeding the pressurised air into the container. At a top portion of the case a valve for mixing the liquid product with the pressurised air so as to obtain an aerosol mixture and a nozzle for supplying the aerosol mixture are provided, the nozzle being mechanically and fluid-dynamically associated with the valve. The feeding of the pressurised air into the container is carried out both before the opening of the valve, that is in a step of loading the container, and while the valve is opened, that is during aerosol spraying of the liquid product.