Belotero, from Merz Aesthetics, is formulated with hyaluronic acid (HA)1, which is found naturally in your skin. It binds with the water in your skin, making it an excellent choice for reducing wrinkles and filling in deep lines and creases. Belotero is made into an injectable gel through a special proprietary process. This moisture-rich gel merges with your skin to seamlessly fill deep wrinkles and lines.