The CeraVe Hyaluronic Acid Serum is a great option for Amazon Prime Day. Hyaluronic acid is a powerful ingredient that helps to hydrate and plump up the skin, reducing the appearance of fine lines and wrinkles. This serum also contains ceramides, which help to restore the skin's natural barrier and lock in moisture. It is suitable for all skin types and can be used both day and night. With regular use, you can expect to see a significant improvement in the overall hydration and texture of your skin.