Chrysin

One of the causes of dark circles under the eyes is the accumulation of hemoglobin, biliverdin, bilirubin and iron in the dermis and epidermis. Chrysin, a flavone present in blue passion flower (passiflora cerulea) activates the enzyme uridine diphosphate-glucuronosyltransferase (UGT1A1) that leads to the degradation of bilirubin. This can help with the appearance dark under eye circles.