A device for dispensing a fluid or powder product comprising a dispensing head (1) provided with a dispensing outlet (10) formed at the end of a hollow sleeve (3), an air flushing system (20) for generating a flow of air when the device is actuated, said air flushing system comprising a piston (21) that slides in an air chamber (22) between a resting position and a dispensing position, said air chamber (22) comprising a cylindrical body inside which said piston (21) slides in a sealed manner, and a reservoir (30) containing a single dose of product, said reservoir (30) comprising an air inlet (31) connected to said air flushing system (20) and a product outlet (32) connected to said dispensing outlet (10), said air inlet (31) comprising a product-holding member (40) for keeping the product in the reservoir (30) until the product is dispensed, and said product outlet (32) being closed by a closing element (50) force-fitted into the product outlet (32) of the reservoir (30), said device comprising a mechanical opening system (61, 62) cooperating with said closing element (50) in order to mechanically expel it from the closed position of same when the device is actuated, said device comprising an indicator (100； 50) which, in the resting position, prior to actuation, is in a first state, and which switches to a second state after actuation, said switch from the first to the second state informing the user that the device has been actuated, said first state being a visible state and said second state being an invisible state, said device comprising a pushing member (25), rigidly connected to said piston (21), on which the user pushes during actuation, said dispensing head (1) comprising a skirt (5) arranged around said air chamber (22), said pushing member (25) being in the resting position prior to actuation, projecting axially out of said skirt (5), and being arranged inside said skirt (5) after actuation, said pushing member (25) comprising an indicator (100) that is
