Dark Circles : A Heredity???

In most cases the dark circles under the eyes are blood vessels that can be seen through the skin. The skin around the eyelids (pre orbital skin) is the thinnest skin in the body (around .5mm thick compared to 2.0mm in other areas). Like varicose veins, dark circles under the eyes are usually an inherited trait. When blood passes through the veins close to the surface of the skin it can produce a bluish tint. The more transparent the skin (also an inherited trait) the darker the circles appear. In people with deep set bone structure, shadowing contributes to the dark colors under the eyes.