Botox is injected into the muscle that is creating the wrinkle. The wrinkle is caused by the movement of the muscle and its pull on your skin. By relaxing the muscle with Botox, you inhibit it from repeatedly causing wrinkling. With time, the wrinkles significantly improve or go away completely. Botox or Dysport has many uses in medicine. Cosmetically it is usually injected into the facial muscles around the eyes to improve wrinkles. It can also be injected for profuse sweating of the arm pits, hands and feet called hyperhidrosis. Botox can also be used to treat spasticity of muscles. It is a great medication and when used properly, incredibly safe with very few complications.Ralph Trey Aquadro, M.D.Auburn, AL