A variety of injectable agents are available to fill lines, folds, and to replace volume. Each has its unique properties and advantages. The most commonly used product is hyaluronic acid (Restylane, Juvederm, Emervel, Belotero and Perlane) that comes in various consistencies and viscosity for different purposes. They are based on a sugar molecule, and do not require skin tests. We also offer a longer-lasting product composed of hydroxylapatite called Radiesse, ideal for facial volume replacement and rejuvenating the back of the hands.