The cleen beauty™ Vitamin C Papaya Glow Serum is highly concentrated for effectiveness, yet still lightweight enough for everyday use. The water-like serum is formulated with Vitamin C, known to brighten and reduce the appearance of dark spots, and papaya for its natural exfoliating properties to help buff away dead skin cells. In addition, licorice root and ferulic acid are used to improve the skin's natural glow. ($9.97, Walmart)