Late, stressful nights often reveal themselves in the form of tired-looking eyes with dark circles underneath. But contrary to popular belief, pulling all-nighters is not the only reason for our under-eye woes. The first step to treating dark circles is identifying the main cause; and only then can they be effectively prevented. Click through the slideshow to determine what may be causing your dark circles and how you can effectively combat them.
—Khaoula Ghanem
Homepage image: Photographed by Mario Testino, Vogue, May 2007