Lip enhancements make use of an injectable filler that serves to plump thin lips. This filler, such as fat, Resytlane, or Juvederm, is injected into multiple sites on the lips. The procedure is typically performed under local anesthesia, and therefore can be done at the office. Although your lips might take on a slightly over filled appearance immediately after the procedure, this gradually subsides in about a few days, or at most a few weeks, if fat is used. Complete recovery will take up to two weeks. The results of the procedure are not permanent due to the natural effects of aging and the gradual absorption of the filler, but results typically last about one year.