There are many factors that are causes of dark of dark circles under eyes. The following factors are the most common causes of dark circles around eyes.

Heredity

Like many skin conditions, dark circles under the eyes are often an inherited trait. It is very common for family members to have similar dark circles. The skin that is under your eyes is very thin. When veins are close to the surface of the skin, it can give the appearance of a blue or dark color. The thinner your skin, which is also inherited, the darker the circles will appear.

Exposure to sunlight

The sun causes pigmentation to be drawn to the surface of the skin. This is true in darker or lighter skinned people. The more you are exposed to sunlight, the more natural pigmentation that is affected. This contributes to the appearance of dark circles. Wearing large sunglasses will help.

Itchy eyes

Any condition, such as eczema, asthma or allergies that causes the eyes to itch contributes to dark circles under the eyes. Excessive rubbing of the skin will cause it to darken. Hay fever sufferers often get circles under the eyes during hay fever season. Certain food allergies can also contribute to darker skin under the eyes.

Nutrition

A diet not containing important nutrients, or a diet that is not properly balanced, can contribute to black circles around and under the eyes.

Medicine

Many medications cause an increase in blood flows. This can cause the blood vessels under the eyes to dilate, giving the appearance of circles.

Pregnancy and Menstruation

Many women