Herbal energy film is used during the day or night: during the day. It is best to apply it half an hour after breakfast, because this is the most vigorous time for everyone's metabolism and can promote the decomposition of oil, so it will be very effective at this time. If you don't have time in the morning, you can use it for half an hour in the afternoon, but you must not use it at night. My daughter's waist herbal energy film is made of 57 kinds of Chinese medicines. After 49 hours of boiling, it is made by 18 processes.