In common, many people think that dark circles are due to the stress you have. And also others think dark circles can be caused by unbalanced life habits. But there are also many other factors which can lead to dark circles under the eyes, such as hereditary reasons and wheat allergies. To treat it, there are also many foods you can just have a try. For example, you can just try some sesame oil, which can help you to reduce the dark circles under your eyes, for sesame oil contain a lot of nutrients such as vitamin e which are good for the dark circles under eyes. So you can have some Moisturizers containing sesame, avocado oil, Vitamin E and K, so that it can lessen the appearance of dark circles. Besides, you should stay away from the stress and Caffeine. By the way, you can just try some cool cucumber which can be effective to your situation.