First, use a damp cloth to clean the screen. Then use SmudgeGuard to maintain a smudge-free screen. For those who use a tablet PC, SmudgeGuard also reduces the friction so that your hand moves more smoothly over the surface. SmudgeGuard is a partial glove made of lightweight nylon and spandex that fits over the pinky and outside edge of the left or right hand. This glove will keep your screen clean!