Ân-dew 10% Azelaic Acid + PHA Serum brightens and clarifies. This multifaceted serum contains azelaic acid and PHA gluconolactone. The ingredients exfoliate dead skin cells, which results in even skin tone and clarity. It also contains hexylresorcinol, resveratrol, and licorice root extracts to improve the appearance of sun damage and hyperpigmentation. Vitamin C is also present in potent botanical forms.