I use to notice that it seemed like the top of my hair always grew faster than the rest. This was when I was wearing a lot of layers and curled the top all the time (80's and 90's). Now I am wondering if the rest of my hair was all growing the same but since I focused on the top the most, maybe I felt it was growing too fast was because if it got too long by even a few inches it would be hard to curl. I remember I was always trimming my bangs just about every month so they wouldn't be in my eyes too much.