2. about how long will it last and what do i do when my blonde roots start to show?
well...as far as roots go, i have naturally blonde hair and dye it reeaallly dark brown. i can honestly go about 3-4 weeks at most before i have to dye my roots again. blonde roots with dark hair look super funky...like you are balding.
you should try it! black is a bitch to get out...but blonde gets really boring...