I've been using jojoba oil as a hair mask one to two times a week for the past few months. I basically apply the oil all over my hair and scalp and leave it on for as long as I can. I like to do this on my days off, and keep the oil in my hair while I do house chores. After a few hours, I wash my hair as usual.
My hair is growing and looking healthier. I think jojoba oil helps hair grow faster because it's nourishing. It treats weak, brittle hair with split ends and breakage. When the hair is not damaged, the roots don't have to worry about fixing the ends and can concentrate on growth.
I think I'm going to continue to use jojoba oil on my hair indefinitely. Even when I reach the length I want, I will continue to use it to keep my hair healthy and shiny. The only downside of jojoba oil is that it can get a bit pricey when you're using it so much.