This doctor hit me with 25 units of Botox. It was my first time ever using it. While I liked watching the lines in my forehead instantly disappear, I absolutely despise the sagging in my right eyebrow. I can't wait for this to wear off. Won't be doing it again. Word of advice to those who are trying it for the first time: Start slowly. DON'T do 25 units at first--no matter what the doctor suggests. Start with maybe 15. You can always get more later.