Electrolysis is the passing of a direct electric current through an ionic substance that is either molten or dissolved in a suitable solvent, producing chemical reactions at the electrodes and separation of materials.
In this process electrons are either absorbed or released. Neutral atoms gain or lose electrons and become charged ions that then pass into the electrolyte. The formation of uncharged atoms from ions is called discharging. When an ion gains or loses enough electrons to become uncharged (neutral) atoms, the newly formed atoms separate from the electrolyte. Positive metal ions like Cu++ deposit onto the cathode in a layer.
The terms for this are electroplating, electrowinning, and electrorefining. When an ion gains or loses electrons without becoming neutral, its electric charge is altered in the process. In chemistry, the loss of electrons is called Oxidation, while electron gain is called reduction.
Electrolysis is the permanent destruction of human hair follicles by inserting a very fine needle into the hair follicle and gently applying a small amount of electricity; which, in turn causes cellular destruction and ultimately halting the ability of the hair follicle to produce a hair.
Electrolysis is not a one-time treatment. Multiple sessions are necessary to achieve permanent hair removal results.