Get rid of dark circle under the eyes

Do you know how to get rid of dark circle under the eyes? I can't help but notice that my eyes are so 'panda' looking, blame it all on the late nights. No, I did not say 'late night out', it's just that it has become my habit of going to bed past 3am or so. BAD bad! Does lemon helps? Or tea bags? Or cucumber? Oh, please share your secret. I heard freeze tea cubes helps, maybe it's time to put it to the test. Let's roll!