Genetics, stress, sinus congestion, and eye rubbing can make the fragile eyelid and surrounding areas susceptible to discoloration and fine lines. "In Traditional Chinese Medicine, the liver is associated with eye health," says Tourles. "When it's not functioning properly or you've had an overdose of toxins, that will be reflected with yellowing of the eye and dark circles underneath."

Beauty fix: Cleanse the liver every morning with a large glass of warm water mixed with juice from half a lemon. Sip ginger or green tea throughout the day, and two to three times per week drink dandelion root tea, which helps rid the body of toxins and doubles as a facial cleanser (keep refrigerated; prepare a new batch every three to four days). Also consider a neti pot to rinse out nasal passages.

And be very gentle: This fragile area doesn't produce much of its own moisturizing sebum, lipids, or fats. Moisturize and soothe with ingredients close to your eye's natural sebum consistency, such as organic macadamia nut, jojoba, or sunflower oils. Look for anti-inflammatory ingredients, including seaweed, pomegranate, and aloe.

Try: SinuCleanse Neti Pot; Weleda Pomegranate Firming Eye Cream; Yogi Tea DeTox