A rectifier circuit 30 of a voltage genetator 100 rectifys a alternating current signals through the use of the electromagnetic induction of a coil 11, the rectified signals are boosied by rectifying the voltage of nodes of the coil 11 by capacitors 21 and 22, and the voltage genetrator 100 generates a predetermined voltage by smoothing the boosted signals by a capacitor 17. According to this method, sebum can be removed from the skin effectively and selectively without removing makeup from the made-up face. The workpiece having an anti-corrosive coating is characterized in that the anti-corrosive coating comprises an organic binder having a silicon-organic compound and particulate metal. To image the light exiting the fiber bundle at the sub-micron level, light expansion is preferable using either a lens system or a fiber bundle expander. In the preferred embodiment, the internal element is a plurality of silver plated copper balls. Laterally of the housing, in the region of each clamping foot, there is provided a laterally integrally formed terminal block which receives a respective outgoing contact for connecting an outgoing line.