I work for an ophthomologist and a facial plastic surgeon. Dark circles are caused by a number of factors. Smoking, drinking, not getting enough sleep etc. There are several ways to get rid of them lasers work as do bleaching creams, which you need to use for several months before you really see results. Many dark circles are caused by thin skin and blood vessels close to the surface of skin. There is another product called Kinerase. They have two different lines a blue label line and a purple label line. The purple line can only be bought at a Dr's office. They do work but are expenise as is the bleaching cream. Your best bet is to go to a facial plastic surgeron or a dematologist that offer lasers. Good luck