Btx has been used for a variety of medical and cosmetic procedures for many years all around the world. Provided it is administered by an experienced practitioner in a properly appointed facility, jawline slimming with btx has consistently been shown to be very safe and have minimal side effects. These can in some cases include swelling and some redness in the treated areas, but these will subside very quickly. Some people may find that immediately after treatment they can experience some discomfort when chewing, but this does not tend to last for long.