I've had very positive results from Botox, in the forehead. All my headaches and eye strain subsided. You might feel some nausea and a headache the day afterwards. That goes away. I remember, after my first exprience, it took awhile for me to get used to my forehad feeling "frozen," but that also goes away. It takes about a week for the full effects to be seen. If your eyelids seem too lowered, that, over a few weeks time, will subside as well. Don't panic. Botox definitely wears off, after about 4 months.