I just whitened my teeth with GoSmile and am using the Touch up's now to keep them white. Do I have to use these forever? Will it last without them?
http://www.gosmile.com/shop/keep-teeth-white/touch-upr-14-count-assorted-with-carrying-case.html
http://www.gosmile.com/shop/whiten-your-teeth/b1-whitening-system.html
http://www.gosmile.com/shop/keep-teeth-white/touch-upr-14-count-assorted-with-carrying-case.html
http://www.gosmile.com/shop/whiten-your-teeth/b1-whitening-system.html