Device for packaging and dispensing a product, notably a cosmetic product

A device for packaging and dispensing a product, the device comprising:

• a container that comprises at least one variable-volume compartment containing the product;
• and
• a dispensing head comprising:
• a mounting base fastened to the container,
• an internal piston configured to move in translation along an axis of movement and delimiting, inside the mounting base, first and second pumping chambers,
• at least first and second inlet orifices for putting the first and second pumping chambers, respectively, into communication with the compartment of the container,
• at least first and second intake valves configured to close the first and second inlet orifices, respectively, in a sealed manner,
• at least one actuating rod extending through the pumping chambers and the internal piston and extending so as to project on either side of the mounting base, the at least one actuating rod internally delimiting a first intake channel in communication with a first outlet orifice of the dispensing head, and a second intake channel, separate from the first intake channel and in communication with a second outlet orifice of the dispensing head, and
• at least first and second through-orifices formed on the actuating rod and opening out into the first and second intake channels, respectively,
• wherein the actuating rod is configured to move axially and comprising a stopper configured to permit the actuating rod to slide relative to the internal piston between (i) a first extreme position in which the first through-orifice is blocked by the internal piston and the second through-orifice puts the second intake channel into communication with the second pumping chamber, and (ii) a second extreme position in which the first orifice puts the first intake channel into communication with the first pumping chamber and the second orifice is blocked by the internal piston.