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 / Giovanni TTTT
RO/LI: Aussie Moist, CJ Argan & Olive Oil, Hask Keratin Protein
DC/PROTEIN: KC Stellar Strands / CNPF
STYLER: CJ Curl Queen
COLOR: henna, amla & indigo
: glycerin in high/low dews, polyquat-10 & 11, parabens