You are the ideal candidate for Botox, because it's easier to prevent than to treat once the wrinkles start setting in more permanently. Most of our patients begin using Botox in their mid-20s, and you can see the results of many decades of use on celebrities such as Cindy Crawford. Units can vary depending on desired results (brow lift? cat eye? bunny lines? crows' feet?) but generally the forehead takes 15-30 units.