I don't know how long it will take to grow out. I have the same problem right now. My neice decided to take the bow out of mines hair and took sissors and cut the whole thing off. I was so angry my sister didn't bring her kids over for 2 wks. It has been about 3 1/2 wks since this happened and at least now her hair will lay down and not stick up. I was just thinking that to even her out that I should just give her a whole hair cut.