Forehead wrinkles are a common concern. Botox is an excellent treatment since it relaxes the muscles that cause the wrinkles. While the treatment is not permanent, it generally last 3-5 months, and helps retrain your muscles over time to prevent wrinkling. We love the immediate smoothing effect you get when Botox (or brother products Dysport and Xeomin) kicks in at 3-10 days post treatment. Best of luck, Dr. Woods