A skin treating implement, a callus removing hand piece, is used to remove skin calluses. The sample ring 2 has two opposed surfaces and foils 8, 10 one on each surface holding a powder sample 6 within the central hole 4. An epoxy resin composition can be provided with latency by adjusting the amounts of the curing accelerator and the component for retarding curing. One or both of the jaw members is pivotable relative to the other about the first and second engagement portions between an open position and a closed position for grasping tissue therebetween. The isolation laminating layer has a plurality of openings to expose the conductive pads. The presence of O3 in the oxidizing ambiance greatly enhances the oxidation rate compared to an ambiance in which N2O is the only oxidizing agent.