Frown lines, or eleven lines, are pronounced vertical wrinkles that form between our eyebrows, in an area known as the glabella. These lines can make a person look angry or irritated and they are one of the main reasons why patients seek Botox treatments. In fact, Botox Cosmetic was first approved for the treatment of moderate to severe frown lines. Botulinum toxin (Botox) injections are currently the best treatment for frown lines. The application of Botox is virtually painless and its effects are very dramatic. However, the results only last about 4 to 5 months and the injections must be repeated periodically to maintain a rejuvenated look. The elimination of frown lines with Botox can have a very significant impact in a person’s appearance, especially in people with a permanent frown that makes them look angry. It is important to make sure that the injector is qualified to apply the product and that he/she uses an unadulterated toxin, such as Botox or Xeomin.