The answer depends upon what you are trying to accomplish with Botox. If you have very active forehead muscles Botox can be used to soften that movement and prevent lines from becoming imprinted on your skin. If you do have etched lines (unusual at 22) Botox can help minimize them and prevent them from getting worse. Stephen Weber MD, FACS
Botox is a great alternative to help prevent future line/wrinkles. Although you are very young, I would suggest you seek a reputable board certified physician to give you an honest evaluation and provide you with a conservative natural look