Dermal fillers are injectable fillers help to quickly add volume to your face, lips, and reduce lines, wrinkles, or sagging skin. There are different types of fillers and your experienced dermatologist will select the best one works for you. Each filler is different in terms of how long the filler lasts, how much is needed, your injection locations, and your skin type when determining the appropriate filler material. Hyaluronic acid (HA) is one of the most popular ingredients used in dermal fillers. It is a natural substance found in the body. Juvederm and Restylane are the commonly used Hyaluronic acid fillers.