Juvederm is a clear gel, and for several days (up to 2 weeks) after injection it can be felt, especially in the lips. When injected evenly, it will not be visible, but it may be palpable. Within 2 weeks the gel will become softer and smoother as it incorporates into the lip. At that time you could follow up with your provider if any adjustments need to be made.
It is not unusual for the lips to feel rigid or unusual immediately after Juvederm filler treatment. This should improve with 3 days or so following injection. If it persists, consult with your physician injector to ensure everything is healing properly. I hope this information is helpful.
Stephen Weber MD, FACS
Denver Facial Plastic Surgeon