A personal care composition comprising a eutectic mixture, the eutectic mixture comprising an alkyl monoethanolamide having an alky chain length from 10 to 14. The system includes a switch, a service control point, an intelligent server, a monitoring module, and a wireless terminating trigger used on a mobile switching center. to provide a double pass through an optical element such as an etalon, or for a multi-port coupler. The method also includes etching the sacrificial layer to form a conducting structure having fins where conducting material remains separated by microchannels where the sacrificial layer is etched. The closed fluid flow circuit within the rotor has a spiraled fluid-return passageway extending along its rotary shaft, and is charged with a refrigerant which is automatically circulated between the primary and secondary heat transferring portions of the rotor when the rotor is rotated within an optimized angular velocity range under the control of a temperature-responsive system controller.