Allergies are often to blame for dark circles. Anything that causes nasal obstruction such as wheezing, coughing, sneezing and a stuffy nose can be the culprit.
Vitamin C and allicin are effective in fighting allergies. Allicin has the potential to assist the immune system in a number of important ways, including stimulating cells, killing pathogens and detoxifying carcinogens. Try these simple steps to solve the problem:
*Dip a cotton swab in freshly extracted mint juice, rosewater or cold milk. Lie down with the feet raised higher than the head, and then place the wet pads on your closed eyes. Stay that way for 10 minutes.

* Gently massage almond oil with lemon juice on the dark area before going to bed to lighten the dark circles.

* Follow a diet rich in iron, vitamins and proteins. Deficiencies immediately show up as circles under the eyes.