Intensive brightening treatment helps improve the look of discoloration, dark spots and post-acne marks. Gel-cream formula is powered by a 15% Brightening Complex of Niacinamide, Tranexamic Acid, Kojic Acid, Alpha Arbutin and Pentapeptide. Brightening results are boosted by THD Ascorbate Vitamin C, an advanced ultra-stable form of Vitamin C. Helps fade the look of uneven skin tone caused by sun damage, aging and acne. Leaves skin looking clear and radiant. 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 Niacinamide Discoloration Treatment, 50 ml | Dermstore