Dark under eye circles can occur from a number of reasons. Bluish dark circles are a sign of blood pooling beneath the skin. These dark circles tend to worsen with age as skin loses collagen, becoming thinner and more translucent. Brown circles are a sign of hyperpigmentation from chronic eye-rubbing, sun exposure or genetics. They are most prevalent among Asian and African American skin tones. To address both types of dark circles, Evenly Radiant® Dark Circle Eye Creme contains Horse Chestnut and Caffeine, both shown to constrict blood vessels and temporarily boost circulation, Hyaluronic Acid to plump skin with moisture, skin brightening Vitamin B3 and Active Plant Stem Cells, plus soothing antioxidants Pycogenol® and Green Tea.