This Skin Republic Hyaluronic Acid + Collagen Face Mask is your answer to younger-looking skin! The youth enhancing sheet mask with anti-aging serum helps target fine lines, wrinkles and loss of firmness. Hyaluronic Acid is a natural element of the skin, it\'s present throughout the body - the magic of it lies in its ability to retain a whole lot of moisture. Just one gram of Hyaluronic Acid can hold a whopping six litres of water! All this added moisture means smooth, plumper, more youthful looking skin.As the skin has a four week regeneration period it\'s most effective when used twice a week for the first month and then topped up as required.