Boosted by 3% Vitamin E and Ferulic Acid, the formula is supercharged with an Antioxidant Superfood Complex that helps maintain and enhance results. Dullness, uneven skin tone, dark spots, fine lines and wrinkles appear visibly improved and skin is left feeling plump with moisture. Dermstore has partnered with Flex to allow you to use your Health Savings Account (HSA) or Flexible Spending Account (FSA). This means you can now use your HSA or FSA debit card to buy Peter Thomas Roth products with pre-tax dollars, resulting in net savings of 30-40%, depending on your tax bracket. Eligible for HSA/FSA with a letter of medical necessity at checkout. From dermatologist-recommended treatments to solutions for chronic skin conditions like acne, eczema, and rosacea, these products are both effective and eligible. | Peter Thomas Roth Potent-C Brightening Vitamin C Moisturiser, 50 ml | Dermstore