Dysport is an injection used to temporarily improve the look of moderate to severe frown lines between the eyebrows (glabellar lines). With just a few injections into the affected area, Dysport stops the signal from the nerve to the muscles. Ultimately, there is relaxation of the muscles that are responsible for those frown lines, and those lines are minimized. The effect can last months and look natural. The untreated facial muscles still contract normally, allowing you to freely show facial expressions, such as smiling, in untreated areas.