How Juvederm Works - from Discovery Health
Here's a good article about the way fillers such as Juvederm work.
You may have heard terms like "marionette lines" or "parenthesis" used to describe someone's facial features. These are nicknames for the nasolabial folds, the lines on your skin that run from the edge of your nose down to the corners of your mouth. Like other creases in your skin, nasolabial folds deepen with age. And -- also like other wrinkles -- dermal fillers like Juvederm are an increasingly popular way of making them disappear.
Juvederm, like Restylane, Perlane and Elevess, is a hyaluronic acid wrinkle filler. Hyaluronic acid is a chemical already found in the human body, although the hyaluronic acid in dermal fillers is created outside the body [source: Physicians Coalition for Injectable Safety]. Juvederm is a gel made of hyaluronic acid that is injected directly into the skin. The gel then fills wrinkles caused by aging, smoothing the skin and giving it a youthful appearance. Entire Article >