Hair is made of protein. If you are on a raw vegan diet that is good, so you may have to include beans, seeds and legumes. I make my own sprouts. Try different sprouts everyday. Also raw nuts everyday should help.
It will take good 4-6 months before you see any results.
I do not think dry fast was bad for you. Our body chooses to get rid of unneccessary fat, tisssues and other junk that it does not need.