Using the Lux Glo is a breeze. First, make sure to clean and dry the area you want to treat. Then, insert 3 AAA batteries (which aren't included) and close the cover. Press and hold the On/Off button for 1 second to turn it on. Place the device right on the skin of the treatment area for 3 minutes without moving it around. After 3 minutes, it'll turn off by itself. Move it to the next area and do the same thing. For the best results, use it every day, but don't do more than 3 treatments a day on each area. When the batteries run out, take them out right away. If the device doesn't turn on, check if the batteries are charged and properly aligned, and that the cap is closed. If it shuts off before the 3 - minute treatment is over, wait a few minutes for it to cool down and then try turning it on again.