In most cases, dark circles are caused by poor drainage and circulation around the eyes, or by the loss of volume around the eyes (as if the eyes "sink-in"). If the reason for your dark circles is the latter, then there really is nothing that gives you a quick, effective and long-lasting results like dermal fillers. I’ve had fantastic results! If however, you are suffereing from that tired, dark, poor circulation look, then you are going to need to use a good, active product that stimulates circulation and drainage, and gives you a bit of brightening around your eyes. If you want some advice on which products, I would suggest the Skin Medica Eye Products.