What it is: A 15% vitamin C serum boosted with caffeine to visibly brighten skin, reduce hyperpigmentation, even tone, firm skin and depuff. What it does: A 15% vitamin C complex helps visibly brighten skin to reduce the look of hyperpigmentation and helps give skin a firmer appearance. Yerba mate and guayusa are naturally high in caffeine and antioxidants to visibly depuff and contour skin. Passionfruit and dragon fruit, both high in antioxidants, help scavenge for free-radicals and replenish m