Q. I am 16 and my teeth are naturally yellow. It’s gotten to the point where I avoid photos and cover my mouth when talking to people because I hate the way my teeth look. I can’t afford professional whitening and I have tried lots of home toothpastes but they all just remove stains. (I always brush my teeth at least twice a day and never drink coffee, smoke etc. so this is not the problem.) Please give me some home remedies as I am desperate, thanks.