I have got 4 treatments in the past 12 months. I started off with 80 units I had 2 fairly deep creases in between my eyes when I scrunched which I did often and 3 distinctive lines across my forehead when I made facial expressions. I am 34 years old. My 2nd and 3rd treatment's I had my Dr. use 100 units of Dysport, using a bit more in between my brows makes it possible for me to get it done...