Hyperpigmentation is the uneven darkening or spotting on an area of skin caused by the overproduction of a pigment called melanin. It can occur for a number of reasons, including exposure to UV rays, aging, genetics, hormonal changes and even certain medications. Obagi-C Fx System C-Clarifying Serum features a non-comedogenic and allergy-tested formula packed with antioxidants, vitamins and nutrients to minimize hyperpigmentation. It lightens and brightens your skin while healing free-radical and sun damage without the use of hydroquinone. With regular use, your complexion looks even, youthful and radiant. Bottle should last approximately 8 weeks with regular use. Key Ingredients: L-Ascorbic Acid: boosts collagen production; reduces the appearance of fine lines, wrinkles and photo-agingArbutin: is a natural skin lightener that stops pigment from forming beneath the skin, preventing hyperpigmentation. 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 Obagi Medical 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. | Obagi Medical-C Fx System C-Clarifying Serum, 1 oz | Dermstore