Dark circles are usually a symptom, rather than a problem in themselves. They are a symptom of eye strain, tension, lack of sleep or age. You can determine what is causing your dark circles. If too much tension or lack of sleep leads to development of dark circles, it is easy to get rid of them by simply sleeping more and taking care of the causes of tension. Sometimes, age can also cause dark circles. This is particularly true if you are suffering from stress as your age advances. This will lead to dark circles appearing faster and also looking more prominent.