Some of the most common causes of true under-eye circles are:

– Disinclinations.
– Atopic dermatitis( eczema).
– Contact dermatitis.
– Fatigue.
– Hay fever(antipathetic rhinitis).
– Heredity.
– Skin color irregularities.
– Rubbing or scratching your eyes.
– Sun exposure, which prompts your body to produce further melanin, the color that gives skin its color.
– Skin changes that be with growing.