A cosmetic portioning machine is provided having a mixing chamber, with a plurality of inlets each of which provides an ingredient. A piston disposed in the mixing chamber to define a mixing volume. A dasher is disposed in the mixing chamber and mixes the ingredients together in the mixing volume so as to form a cosmetic. When the cosmetic product is thoroughly mixed, the piston urges the product out of the mixing chamber and through an outlet. A moveable sealing member is configured to pass through the outlet so as to seal off fluid communication between the mixing chamber and the outlet and to urge any remaining cosmetic product through the outlet.