In one of the threads inquiring into the average length of time 4Bs waited between touch-ups, I saw a great deal of discussion about "stretching" touch-ups beyond 8 weeks. Since the touch-up is to be applied only to the new growth, and not overlapped onto the hair that is already relaxed, I was wondering about the benefits of risking shedding and breakage at the demarcation line. Is this just to prove some point, or what? Please enlighten me. Thanks much, in advance, for all your posts.