I was disturbed by the acne for many years.In my memory,I was persecuted by this problem since primary middle shcool.Right now,I am a postgraduate student,almost ten years. However,It is amazing that both of my parents have smooth and white skin.They never suffered from the acne or other skin problem when they were young.I am well acquainted with the reason of the acne because I am a medical student,I know the therapeutic measures and the precautionary approches and all that,nevertheless,It is really difficult to implement.I like eating spicy food and the sea food,both of which are bad to the skin.Maybe the most important reason is that I had to stay up so late almost every night,.After the winter vacation I want to synchronise my body clock by getting up and going to bed at the same time every day.Taking a powerful nap everyday,It seems rather difficult.I can't sink into a deep sleep until wee hours of the morning.Maybe I have to take my husband's advice to drink some mannitol,a monosaccharide, C6H12O6,

obtained from mannan or by the oxidation of mannitol.Application Comparison of the Mannite in Intestinal Preparation Pre Operation.I have to use this liquid to wash out the toxin,just have a try.