If your lip is too high at rest, it is doubtful that Botox will drop it, but the treatment would be very similar to treating a gummy smile. We simply inject the Botox into the muscles that lift the lip so that those muscles relax and can't lift the lip as well. Unfortunately, there is not much tension in relaxed muscles, so I don't expect the Botox to drop a lip from a relaxed position. Sometimes it's worth a try though. Make sure you see a very experienced injector since this type of Botox treatement is unusual, and a very thorough understanding of the facial muscles is mandatory to prevent an unexpected consequence like a crooked smile (you wouldn't like that at all and it would take weeks to resolve).Andrew Campbell, M.D.Facial Plastic SpecialistQuintessa Aesthetic Centers