Hyaluronic acid is often considered the "fountain of youth" thanks to its ability to retain hydration - it can in fact retain up to a thousand times its weight in water -, for its ability to instantly plump the skin and attenuate wrinkles. Furthermore, hyaluronic acid has the ability to strengthen the outermost layer of the dermis and create a defensive barrier; it helps the skin to protect itself from damage from the sun's rays, inflammation and superficial wounds.