Most experts agree that dark circles are not about changes in the color of the skin at all. Instead, they are created by a loss of volume in the area around the eye that exposes the underlying blue veins and orbital bone. This results in a hollow trough (called a “tear trough”) that shows up as a dark circle. These changes are often caused by genetics; however, significant weight loss and aging with resorption or displacement of the infraorbital fat pads can also expose under-eye tear trough depressions.
Treatment can consist of Restylane injections, to restore volume. For those with prominent fat pads, surgical correction is helpful.