Biopelle KNR Brightening Serum features an advanced biocomplex of proven radiance-boosting ingredients and technologies to visibly improve the appearance of hyperpigmented skin. Kojic acid increases cell renewal as it exfoliates and diminishes melanin production to restore a luminous glow to your skin. RetinSphere gives off time-released doses of 0. 75% retinol to revitalize and firm your complexion without causing irritation. 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 Biopelle 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. | Biopelle KNR Brightening Serum, 1 fl. oz | Dermstore