Thanks Reha, my hair tends to get oily very quickly so I wash it almost every day but i’ll try not to. Also, there’s something i’m still a little confused about. I have black hair, with whites…my goal is to have medium brown hair. How do I manage to turn the the whites, brown and the black, medium brown? Can I achieve both with one box of color if I get the one that colors whites? Will it turn the black hair lighter also?