BOTOX® Cosmetic is a prescription medicine that is injected into muscles and used to improve the look of moderate to severe frown lines between the eyebrows (glabellar lines) in adults younger than 65 years of age for a short period of time (temporary). With real, noticeable results, no surgery and no recovery time, there are many reasons why BOTOX® Cosmetic has been the most popular physician-administered, non-surgical aesthetic procedure for seven years running.