JUVÉDERM® is one of the only fillers that has been approved by the FDA to last up to one year. It uses a high concentration of cross-linked hyaluronic acid to provide results that are longer lasting than most other hyaluronic acid fillers. “Cross-linking” refers to the process of turning the liquid hyaluronic acid into a gel form. While many hyaluronic gel fillers have a granular feel, JUVÉDERM® is a smooth, malleable gel that provides a natural look and feel.