Firstly let's get down to some of the basic causes of dark circles.
Lack of proper intake of water – It is important to flush out toxins from your body constantly and store them lest they harm you. Start with at least 10-12 glasses of water in your daily intake.
Haemoglobin Levels- You need to also check on internal problems with regards to your hemoglobin levels and get an appointment with your doctor to see if there is any internal weakness for which you may have to take vitamin supplements. This, however, can also be substituted with a high protein and balanced diet.