Thin, translucent skin around the eyes is more likely to show discoloration and signs of aging. Vitamin C is especially important for the delicate area because delivers enhanced antioxidant defense for brighter, healthier-looking skin. Formulated to target multiple types of dark circles: Blue/purple: Low microcirculation and thin skin around the eyes increases visibility of unoxygenated blood (which is blue). Brown: Sun damage, irritation and genetics can result in hyperpigmentation. Red: Triggered by inflammation, irritation and allergies