One of the most serious complications from Facial Surgery is injury to the nerves that control the facial muscle. The branch of the facial nerve that controls the forehead is known to be at risk, although it is still a very rare occurrence. If no degree of strength returns to the nerve over 6-12 months, it is likely that the injury is permanent. There are nerve repair surgeries that can be performed, with varying degrees of success even in the best hands. In most cases, a Browlift procedure can keep the eyebrow from drooping, but since the muscle of the forehead may still not work, Botox or Dysport can be used to treat the other side of the forehead to keep the level of movement more equal across the forehead.