Age Logic Serum (formerly known as Time Logic Age Serum ) from Guinot is formulated to help prevent and minimize the visible signs of aging. Powered by vitamins C and E and 56 active ingredients, this concentrated formula is absorbed by the skin day and night to encourage a more radiant and toned complexion. Key Ingredients:ATP: stores essential energy for younger-looking skinActinergie: increase oxygenation in the skin56 Active Ingredients: supplies the elements required for healthy rejuvenationVitamin C and E: thwart free radicals and brighten the skinKey Benefits:Restores the skin day and nightHelps to thwart the visible signs of agingEncourages a more youthful and radiant complexion. 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 Guinot 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. | Guinot Age Logic Serum, 0. 84 fl. oz | Dermstore