One Of My Friend Eats Lot Of Gutkha And Pan

One of my friend eats lot of Gutkha and Pan Masala. His teeth have become red. What should he do to remove the red color caused by chewing these products of Gutkha and Pan Masala? Which toothpaste he should use to remove red color of teeth? Whether he should go for bleeching or there is some other method to do it? - See more at: http://www.tikshare.com/forum/showPost/1576/How-to-clean-the-teeth-become-red-by-eating-Gutkha-and-Pan-Masala?#sthash.QEMnjxO7.dpuf