Hey, 8 hour sleep is enough , Facial aging and dark circles Volume loss or fat descent in the cheeks Under eye volume loss Lower eyelid (canthus) laxity Thinning under eye skin Bulging under eye fat, Other causes of dark under eye circles include IMedical conditions (eczema, thyroid problems, etc.) Venous congestion in under eye blood vessels Environmental exposureHeredity Get enough rest. A gently applied black tea bag or cold compress can reduce blood vessel dilation.To decrease pigmentation, protect against the sun by wearing (large) sunglasses.Slight elevation of the head during sleep will help prevent fluids from draining toward the eyes.