Benign side effects are well-localized, reversible and self-limited issues which develop inside of a couple of days from the injection, and they typically disappear with no treatment. The aesthetic and functional adverse effects are connected to different muscle mass responses to botulinum toxin or with misplacement of botulinum toxin. https://jasperznucj.wikikali.com/1432067/the_greatest_guide_to_botulinum_toxins_in_humans