Hyperactivity of the facial expression muscles often results in the development of wrinkles and deep lines. Injecting botulinum toxin, commonly known as BOTOX, into the affected area temporarily weakens the underlining muscles responsible for wrinkling, giving the face a more relaxed and pleasant appearance. The wrinkles become smoother or disappear altogether. Botox injections will reduce dynamic wrinkles only. If static lines are present prior to treatment, they will still be present when muscle relaxation occurs as a result of your injections. The upper face static lines may soften with repeated regular treatments. Over time, if these static lines are still present and are of concern, dermal fillers may be used to soften them further.