After adequate cleansing and numbing of the treatment area, two small entry points are made in the underarm region. They are just 3mm wide and do not require any sutures. These allow the passage of the thin laser fiber which is used to deliver a set number of joules to the tissue. The sweat glands contain a lot of water, snd the specialized laser wavelength used is attracted to that water. The energy delivered targets and damages the sweat glands. A special sensor called a Thermiguide monitors the temperature and assures that the skin will not receive too much heat.