Juvéderm, one of the newest of the so-called “injectable fillers,” is used by cosmetic, dermatological and plastic surgeons to soften deep folds and reduce wrinkles in the faces of patients. The substance is largely hyaluronic acid, a substance normally found in the skin, muscles, and tendons of mammals. Approved in June 2006 by the U.S. Food and Drug Administration, Juvéderm’s prime use is removing nasolabial folds, or “smile lines,” creases of skin which run from the corners of the nose to the corners of the mouth. It is also used as a lip augmentation agent, and to fill in hollow places and scars on the face. However, all hyaluronic acid facial filler products are eventually absorbed by the body, usually within six to nine months, causing the patient to undergo repeat injections to maintain the younger look. Juvéderm is also used by physicians to plump lips, which also lose fat and internal shape with normal aging.