Dermal fillers are injectable substances that are used to fill in wrinkles and lines on the face and to restore volume to areas that have lost fullness due to aging or other factors. They are typically made from hyaluronic acid, a natural substance found in the body that helps to hydrate and plump the skin, or other materials such as calcium hydroxylapatite, polylactic acid, or PMMA.

Dermal fillers are often used to treat areas such as the cheeks, lips, and under-eye hollows, and can also be used to fill in scars or enhance facial features such as the jawline or chin. The effects of dermal fillers can last anywhere from several months to a year or more, depending on the type of filler used and the individuals metabolism.