What actually "causes" serious dark circles according to most research dermatologists, serious dark circles are about, of all things, the oxidation of hemoglobin (blood) in the capillary matrix of the peri-orbital eye area.

These capillaries actually "leak" blood that begins to oxidize (through a process called hemoglobin degradation)... creating a dark bluish-red pigmentation that looks distinctly like an ugly bruise. Tiny little capillaries deposit blood around your sensitive eye area. The blood turns deep purple and you end up having those dark circles under your eyes.

Hylexin is not an Ordinary Eye Cream...It’s a Dark Circle Breakthrough. Because serious dark circles are so difficult to address. It's not surprising that the hottest new "must-have" compound to shake up the "cosmeceutical" market is something called Hylexin™.