Yon-Ka Hydra No1 Serum is delivers essential moisture to the skin to for a smooth and youthful complexion. Hyaluronic acid improves smoothness to minimize the appearance of fine lines and wrinkles. Vitamins A and E nourish and protect against environmental damage. 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 Yon-Ka Paris Skincare 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. | Yon-Ka Paris Skincare Paris Hydra No1 Serum, 1. 01 fl. oz | Dermstore