A device is proposed for low-bubble mixing and discharge of a product. The device comprises a housing (10) which delimits a reservoir for the product. In the reservoir, a mixing element (23) is moveable in order to mix the product. A piston (40) delimits the reservoir in the proximal direction and is displaceable into the distal direction in order to discharge the product from the reservoir. In order to force gases out of the reservoir and thereby prevent bubble formation, the device has a spring element (50) which loads the piston with a spring force in the distal direction.