A dispensing device (100) according to the invention comprises a reservoir (4) for a liquid or semi-liquid substance to be dispensed and a pumping mechanism (5) for dispensing the substance. The device is characterized in that it includes a housing (1), in which an upper body (2) and a lower body (3) are located, wherein a deformable reservoir (4) is located on or around the lower body (3) and the pumping mechanism (5) is located in the upper body (2). A supply valve (6) and a dispensing valve (8) are located in the lower body (3), and the supply valve (6) is connected by means of a lower channel (7) with the reservoir (4), and a dispensing valve (8) is connected by means of an upper channel (9) with the pumping mechanism (5).