Having dark circles is a common problem many people deal with as they make your skin look dull and tired. Dark circles appear when the area below your eyes looks darkened and They can become very noticeable as the under-eye skin is one of the thinnest and most delicate areas in the body, making it extremely necessary to treat them. If you know the root causes of dark circles, you’re better prepared to treat them properly. The most common causes of dark circles include lack of sleep, iron deficiency, too much screen time, allergies, aging and genetics. But the good thing to know is that dark circles are not permanent and can be reduced by using effective and the best eye cream for skin whitening without side effects.