C. E. O. Brightening Serum, powered by 15% advanced Vitamin C, is targeted to quickly fight the look of dullness, dark spots, and discolorations at the source, while diminishing the signs of aging. Skin looks and feels firmer and plumper, as youthful skin bounce and even-tone are restored. 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 Sunday Riley 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. | Sunday Riley C. E. O. 15% Vitamin C Brightening Serum, 50 ml | Dermstore