Hey all,

I'm a guy with black hair. I'd like to dye my hair dark brown and I have no idea how it all works. I usually have a short hair and my hair usually grows very fast like I get a hair cut every month I guess.

So my question is do I need to dye my hair every month when I get a hair cut?? because in one month my hair length almost doubles in size. Does it mean only half of the length will be dyed in a month???

thanks for all the help!!!