Eye Mask infused with Hyaluronic Acid by Okioki. They say the eyes are the window to the soul and they reveal your emotional state. Taking care of the delicate eye area is essential to improve the way you feel, look and the way others see you. Now you can do it while you sleep with this eye mask infused with hyaluronic acid. Hyaluronic acid is a substance that our body produces naturally and it helps retaining moisture in the skin to keep it tight and youthful. However, our hyaluronic acid production decreases with the natural ageing process, and as a result, our skin retains less moisture and wrinkles appear.