I use an electro stimulation device "Violet Wand" which creates high frequency high voltage electicity. The power (intensity level) is adjustable. With this device I can cause stingy, electric sensations on the skin.
The device does not cause danger because the current does not go trough your body — it only works on the surface of your skin. It is the same kind of reaction as getting a 'shock' when you take hold of a metal railing or a knob.
When the device is used on a low power, it feels like tickling on the skin. When the power is turned up it causes pain. On sensitive areas, such as nipples and genitals it feels much stronger than elsewhere on the skin.
Electro stimulation does not leave any marks on the skin when used carefully. Some redness is to be expected with prolonged use or high power.
This equipment should not be used near anyone with a Cardiac Pacemaker, or implanted electronic device of any kind. It should not be used on anyone with known brainwave irregularities, seizure conditions such as Epilepsy, or heart rhytm abnormalities.
