Juvéderm is one of the newest fillers on the market. It is made of a substance called Hyaluronic Acid, which is the same as the active ingredient in Restylane and they are very similar in their indications and results. In my experience Juvederm is a bit more fluid, which seems to result in less discomfort during the injections, and in many patients less bruising and swelling.
It is another material that can be used safely in the lips, and Juvéderm is easy to mold if necessary after injection. I really like Juvederm as well for filling of the nasolabial folds, lips and labiomental (marionette line) areas.