The most common Lip Fillers (Restylane, Hylaform, Captique) are all composed of hyaluronic acid, a naturally occurring substance in skin. They pretty much give equivalent results.
While we have all seen the freakish outcomes in celebrities, here is the other side with a modest enlargement. This patient was injected twice two weeks apart with about half a single unit each time to get the results you see a week after the second injection. She had no bruising and was out and about the evening after each injection. There is swelling that resolves, but in modest enlargements, no trout and no fat lip.
John Di Saia MD