firstly you shoud find out what is the cause of dark circle undr of eye,if you are anaemic,haemoglobin is very law,if you are malnourised where deficiecy of vtamins like a,d,vit c and bcomplex are there.
so you take fresh fruit,juices,green vegetables,plenty of salads an plenty of fluids,diet rich in protein and minerals.
for anemia and any vitamin deficiency you consult your doctor.
when you go out,wear good branded sun glass.

Hi, Welcome to Healthcare Magic Forum.
Dark circles may be related to hereditary factor, due to stress and illness, smoking and alcoholism, nasal congestion, pigmentation irregularities, Sun exposure and allergies. Mild to moderate dark circles often respond well to simple measures. Try a cold compress, with two chilled teaspoons wrapped in a soft cloth to temporarily reduce dilated and discolored under eye blood vessels.Elevate your head with two or more pillows to prevent puffiness that develops when fluid pools in your lower eyelids. Sleep for a minimum of 8 hours daily, avoid stress and Exercise regularly.
Good Luck.