An apparatus for removably retaining a single use cartridge and dispensing at least one compound from the single use cartridge. The apparatus includes a dispensing pen having a housing which includes a source of electricity, an electric motor, a gear assembly and a moving shaft with a multiplicity of teeth to cause an advancing shaft to move forwardly toward the front of the pen and interact with a piston to push a plunger at the rear of the cartridge so that it will dispense compounds from the cartridge. The cartridge can be a single chamber cartridge or a dual chamber cartridge or a dual chamber cartridge separated by a dividing wall. There can be any numerous compounds including teeth whitening compounds, nail polish, cosmetics, etc.
