This invention relates to hand held Violet Ray and D'Arsonval High FrequencyMachines sometimes also referred to as Hand Held Ozone Producing Apparatus.Theyare generally used for cosmetic applications such as the improvement of skinappearance and the promotion of hair growth. A specially arranged electricallyconducting layer on the inner wall of the handle not only reduces conductedelectricalinterference into the ac mains supply but also makes it possible to make acompact self-contained battery powered device.