What shape of electrode is used when applying a Tesla high-frequency current to the face?

The shape of the electrode used when applying a Tesla high-frequency current to the face is flat. Flat electrodes are specifically designed to provide even distribution of the current across larger surface areas, which is beneficial when treating broad regions of the face. This shape allows for a more effective and comfortable application of the high-frequency current, enhancing the overall treatment experience.

In contrast, other electrode shapes such as round or pointed are typically used for more localized treatments or smaller areas, where precision is necessary. A cylindrical shape might also be used in different contexts but does not provide the same flat surface area coverage that a flat electrode does. Using a flat electrode ensures consistent treatment and maximizes the potential benefits of the Tesla current on the skin.