Sleeping 8 hours a day dark circles under the eyes is still very heavy may be cosmetic stimulation, cirrhosis and other diseases. 1. Cosmetic stimulation: if usually often make-up, and there is a make-up removal cleaning is not in place, resulting in the skin around the eyes for a long time by the cosmetic stimulation, to a certain extent, it is easy to sleep 8 hours a day, the phenomenon of dark circles is still very heavy. 2. Cirrhosis: the disease is commonly caused by hepatitis B virus infection, but also with genetic, long-term cholestasis, chronic alcoholism, parasitic infections and other reasons. Typical symptoms include loss of appetite, emaciation, fatigue, dark color, etc. Some patients will have dark circles under the eyes and also very heavy. Clinically, there are many reasons why patients sleep 8 hours a day and still have heavy dark circles under their eyes, if you exclude the physiological phenomenon, you should go to the hospital in time to see a doctor.