This antioxidant-rich serum combines time released vitamin C with a blend of botanicals to treat acne, rosacea, contact dermatitis and even insect bites. Olive leaf extract works with the vitamin C (L-ascorbic acid) to provide maximum antioxidant protection and health-promoting benefits. Zinc sulfate reduces inflammation, kojic acid prevents blemishes and vitamins E and A condition, nourish and neutralize free radicals. Pro-Heal Serum Advance+ offers iS Clinical's highest levels of antioxidant protection, making it ideal for sensitive, compromised and sickly skin types. 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 iS Clinical 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. | iS Clinical Pro-Heal Serum Advance Plus, 1 oz | Dermstore