Oversleeping, extreme fatigue, or just staying up a few hours past your normal bedtime can cause dark circles to form under your eyes. Sleep deprivation can cause your skin to become dull and pale, allowing for dark tissues and blood vessels under your skin to show.
Natural aging is another common cause of those dark circles under youreyes. As you get older, your skin becomes thinner. You also lose the fat andcollagen needed to maintain your skin’s elasticity. As this occurs, the darkblood vessels in your skin become more visible, causing the area below youreyes to darken.
Staring at your TV or computer screen can put a significant strain on your eyes. This can cause blood vessels around your eyes to enlarge. As a result, the skin surrounding your eyes can darken.