Injectable cosmetic wrinkle fillers are soft-tissue fillers approved as medical devices by the U.S. Food and Drug Administration (FDA). These devices are injected into the skin for correcting soft-tissue contour defects, such as moderate and severe wrinkles and folds, and for restoring the signs of facial fat loss in people with human immunodeficiency virus. Although the aesthetic treatment with injectable dermal fillers is considered to be safe, adverse events are involved with this minimally-invasive treatment. The FDA received 930 post-marked reports of adverse event from 2003 through 2008, of which 823 were deemed severe and 638 required medical treatment and follow-up.