Abstract: A nail polish color formulation machine comprises a processing device; at least one plunger; at least one nail polish cartridge having a syringe-like dimensions with a plunger receiving opening at a proximal end and an outlet opening at a distal end. The nail polish cartridges are configured to receive a plunger and the plunger is designed to move up and down inside nail polish cartridge. The nail polish color formulation machine comprises at least one motor that is mechanically coupled to the at least one plunger to move the plunger vertically up and down, and open/close devices that close the outlet openings of the nail polish cartridges responsive to not having a nail polish bottle on the open/close device. The nail polish color formulation machine receives a desired nail polish color, and actuates the motors to move the plungers up and down inside the nail polish cartridges.

Abstract: Mixer systems 200 are provided. A representative mixer system 200 includes a power circuit 105 that powers the mixer apparatus 200; a motor 110 that is electrically coupled and powered by the power circuit 105; and a rotating structure 115 that is mechanically coupled to the motor 110, which rotates the rotating structure 115. The rotating structure 115 includes container chambers 230a,b that a container 240a,b is aligned therein, wherein the rotation of the container 240a,b mixes substances that are contained in the container 240a,b to have a homogeneous or heterogeneous mixture.