Daily 1 piece, should not be posted more than 8 hours each time, the foil directly attached to the skin. If you feel hot, this is a normal burning fat. 4-weeks per course of treatment. Insist on a course , You will have the perfect body!TIPS: Do not use too long. 8 hours is recommended time. Reasonable timeframe is 3-8 hours. After you try a few times, you will be able to find a suitable time!