Definitely depends on your individual hair. My hair still grew fine (and fast) with 2" of strawlike damaged ends. It had no effect on my hair growth. I did end up chopping them off, because I couldn't stand the tangles and the feel of them. My hair wasn't breaking, but I did fry individual hairs off here and there - I saw them falling into the sink and didn't care. Oh, the things we used to do to our hair.
2c-3a - coarse - normal-high porosity - high density - growing out to donate

NP/LP: KMF Whenever Cond./ YTCucs, Giovanni TTTT
RO/LI: Sevi Pumpkin Seed DC / CJ Argan & Olive Oil, KCKT, YTBbs
DT: Coconut Oil + scalp massage
COLOR: henna, amla & indigo