Botulinum toxin (Botox®, Xeomin) is a neurotoxin produced by the bacterium Clostridium A. Botulinum toxin can relax the muscles on areas of the face and neck which cause wrinkles associated with facial expressions or facial pain. Treatment with botulinum toxin can cause your facial expression lines or wrinkles to be less noticeable or essentially disappear. Areas most frequently treated are: a) glabellar area of frown lines, located between the eyes; b) crow’s feet (lateral areas of the eyes); c) forehead wrinkles; d) radial lip lines (smoker’s lines), e) head and neck muscles. Botox is diluted to a very controlled solution and when injected into the muscles with a very thin needle, it is almost painless. Patients may feel a slight burning sensation while the solution is being injected. The procedure takes about 15-20 minutes and the results can last up to 3 months. With repeated treatments, the results may tend to last longer.