Crooked Smile After Juvederm Permanent?

Lip tissue is like sponge so it's not uncommon for some areas to "fill" more than others. Many people already have some mismatch in lip size and it is only when the lips are augmented that they notice this anomaly. Most lip augmentation requires very small amounts of product. It could be that you are experiencing temporary swelling in one area that is more than another. Juvederm draws tissue water and most patients have a short term over response that resolves relatively... more

Juvederm is not permanent.  It lasts 4 - 6 months, on average.  If the abnormality you have noted following the injection of Juvederm is due to the Juvederm then it should resolve.