Dark circles are no more only a cosmetic issue. They are suggestive of an unhealthy lifestyle. I understand that your work entails you to work late nights... that is one thing that is not in our hands to change at the moment. But my question to you is: Do you otherwise have healthy eating habits and do you exercise at all? Unfortuntely only creams and tablets do not work to reduce dark circles. You need to have an holistic approach. EVen if sleeping on time is not possible in your case... eating healthy and exercise definitely will be in your hands. Make these life changes permanently! You will see a good result... once you start making these changes then personally visit a dermatologist.. the doctor will explain to you in detail the possible treatments. Understand that any condition of the skin requires not only a doctors treatment but also requires that the patient make changes and help the doctor. It's a two way street.
Modify lifestyle and then visit a dermatologist near you
Do not use creams or 'treatments' suggested by friends or family or pharmacists