Two years ago i first got dark circles under my eyes. I think it was due to drinking a lot of coke at the time. After a while of staying off coke they went, however lately they have come back. They seem to be worse when i drink alcohol, etc. However i don't drink that much, and i don't smoke. I haven't drunk alcohol for a fortnight and they are still with me. I don't drink alot of caffeine... The problem isn't hereditary and i'm getting plenty of sleep, and i'd say i have a balanced diet, although maybe something is contributing....

Anyone got any advice?
Thanks in advance