I went home last week because my mother had surgery..so I went to the salon in Charleston...anyway, I had just started using surge the week before and I hadn't combed my hair for days, so she was like "how long since the last relaxer?"...I told her, since Nov 1 and she was like I was waiting too long because my hair was locking anyway, she used the Mizani sensitive scalp becuase she had to work her tail off to come thr the new growth....needless to say there was no burning and no irritation...I got a doobie and my hair is now past my shoulders..i don't know if I can still go 3 months with no relaxer(sad) since I will be using Surge on a regular and my new growth is a beast all by its self...but I haven't used enough Surge to notice a difference...