This listing is part of the bundle offer! All listings are marked with an emoji to indicate their bundle price. Bundle items to reach a minimum total of $25 and save. PETER THOMAS ROTH Potent-C Brightening Vitamin C Moisturizer A supercharged moisturizer with 10% THD Ascorbate Vitamin C that provides clinically shown, visible brightening results and targets signs of aging. Brand New! Deluxe Sample!