Dark under-eye circles plauge most everyone. And for those that don't....well boo-you! A lot of people ask what the heck the darkness is all about and it's actually pretty simple. There's tons of blood around our eyes. Underneathe them, around them, above them...yada yada yada. The darkness that you see is the blood. Allergies, thinning of the skin and collagen (aka aging.) nasal congestion....all of these things can add to the natural progression and inevitability of under-e