An antioxidant-rich serum with powerful 15% L-ascorbic acid combined with lactic acid to enhance performance and visibly improve signs of aging– loss of elasticity & firmness, fine lines, wrinkles, dark spots, uneven tone, and dullness. 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 Dr Dennis Gross 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. | Dr Dennis Gross Skincare Vitamin C Lactic 15% Vitamin C Firm and Bright Serum, 1 fl oz | Dermstore