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 - med-coarse - normal-high porosity - high density

NP/LP: CJ Daily Fix, KMF Whenever Cond./ Giovanni TTTT
RO/LI: CJ Argan & Olive Oil, JC Too Shea / Aussie Moist
DT: Coconut Oil + scalp massage
OIL/STYLER: JC Rockin' Ringlets, SS Curl Enhancing Jelly, KCCC
COLOR: henna, amla & indigo
: glycerin in high/low dews, polyquats, parabens