Treatment with BOTOX Cosmetic (or other relaxers such as Xeomin, Dysport, or Jeuveau) is generally a safe procedure, though we like to inform our patients that every medical procedure carries certain risks and the potential for complications. Potential side effects or complications of this procedure may include: Bruising Numbness Temporary eyelid droop For the best possible results, make sure your provider is a master injector who has extensive knowledge of facial anatomy and plenty of experience performing BOTOX treatments, like the facial plastic surgeons and their team at Clevens Face and Body Specialists in Merritt Island and Melbourne, FL.