Abstract: Apparatus for "depilation" or "electrolysis" including a current source, a plurality of filament electrodes (needles), and electronic circuitry for individually stabilizing the electrode currents at a predetermined value irrespective of withdrawal of selected needles, variations in the effective resistance of the hair and power supply transients.A programmed current interrupt circuit is also shown, and apparatus for skin conditioning in both current polarities is included, using the basic electronic control circuitry.