While BOTOX® is a very safe and effective treatment, it isn’t for everyone. The best candidates are people who are healthy with no history of neuromuscular disease, who aren’t pregnant or nursing, and who are at least 18 years of age. You should not receive Botox® if you have weakness in the muscles you want to target, drooping eyelids, deep facial scarring, very thick facial skin, marked asymmetry of the face, or skin disorders where the injection will take place.