The area under the eye is webbed with tiny capillaries, blood vessels, so tiny that red blood cells have to stand in line, and sometimes bend in half, to get through them. Blood sometimes leaks from these capillaries .This probably happens all over the body all the time. This loose blood isn't a problem. Your body has a method of taking care of it.
Unfortunately, your body's mopping-up process to get rid of that loose blood is what causes dark circles under the eyes.
Very popular ad on tv use garnier cream for dark sports and use of fresh fruits and vegetables and have a proper rest in the night because heavy workload during th day tired the eye cells and you can feel it .