Hello.
Dark circles around the eyes occurs due to the following reasons.
1) allergies, asthma, eczema, etc.
2) Hereditary
3) Nutrient deficiency.
4) Excess work load, No proper sleep, Fatigue.
5) Some medical conditions
You have to find out your reason and treat that.
Here are some tips to help you deal with dark circles.
1) Eating plenty of fruits and vegetables rich in beta carotene help you have healthy eyes. Carrots,Spinach, Papaya, Mango.
2) Blinking regularly It provides a nice massage and exercise to eyes.
3) The cold helps to avoid under eye wrinkles and dark circles around the eyes.
4) Leaving thin slices of cucumber on the dark ring under the eye will make the dark area virtually disappear.
You can follow me on twitter drarunprakashmd, for medical help and tips.1 Doctor agrees with this answer
the most common cause of dark circles around eyes is stress and incomplete sleep ,intestinal infections , nutritional deficincies
to avoid and eradicate them completely you may take following measures
do not rub the skin around eyes as it is so delicate it may be hyper melanosed
sleep properly
do regular yoga and meditation
do not apply any oily perfumed cream around eye during day time
apply wheat germ oil anticlockwise during night
apply almond oil [Rogan badam sheeren] it is natural source of kajolic acid well known skin lightening agent
eat fresh coloured fruits
DR Shailendra Naithani
MD {AYURVEDA}
Lucknow