​The CoolTouch laser works to eliminate fungus that is deeply embedded in the nail. As the toenail is treated with the laser, you will feel a mild warming sensation followed immediately by a burst of cooling agent. The treatment itself takes about 15 minutes.  Depending on the growth of your nails, results can often be seen within 2-3 months. It takes at least 6 months for complete nail regrowth, so results may vary.