Botox or Dysport injections in the jaw muscles are one of the most requested areas to treat in women. Botox or Dysport injections in the masseter muscles will help reduce muscle contractions and therefore help reduce the volume of the muscles, which can help make the face appear more oval. It will make the jaw appear less square and less prominent. This technique can also be used for those with severe bruxism (muscle contractions). These individuals suffer severe and painful contractions, often at night-time, as well as clenching of the jaw.