This is a 27 year old female who had never had Botox injections before, but desired some preventative treatment to her forehead and frown lines. As such, we treated these areas with Botox, and she loved her results! Notice the improvement in not only her dynamic wrinkles but also her brow position. She is hooked on Botox for prevention! After all, the best wrinkle is the one you never get. Photos taken 2 weeks apart. Botox starts working in 5-7 days and is fully effective in 2 weeks. Results last 3-6 months.