The two main muscles responsible for frowning are called the corrugators and the procerus. When theses muscles contract, they leave lines (‘11” wrinkles) indented into the overlying skin. Eventually as we age, these muscles become over contracted and tight. This results in you looking stressed, tired or angry, even when you don’t feel that way. Treating these two muscles with anti-wrinkle treatment is quick and easy, it works by targeting and relaxing the responsible muscles for the frown lines and causing the overlying skin to smooth out with the relaxed muscle. The result is an aesthetically reduced frown line.