Iontophoresis Very often, the next treatment suggested is iontophoresis. This is most effective for the hands and feet, but it is not so easy to treat the underarm area using this method. During iontophoresis, the affected area is placed in water and a weak electric current is passed through for 20 to 30 minutes. To treat armpits, wet pads are placed in the armpit and the current is applied. There is no pain, but it may cause skin irritation and some […]