Were you able to take care of your dark under eye circles? Most of what you needed to know have already been said by the others here, rubbing ice cube around the eye area may also help. But it's really much better to catch some good night's sleep. If you really can't avoid the all-nighters (hello, college friends!), then it might help to try the remedies (I'm not sure about the lemon. I feel the sting already as I'm imagining it.) mentioned here. Better yet, consult a GP or dermatologist if you have time.