Ok seriously, this is the easiest tooth whitener ever and guess what? It works! I gave it to a friend of mine who didn’t even use it every day (as she was supposed to) and after finally finishing the packet I can say that her teeth are definitely whiter. All you have to do is place the bleaching strip in the tray, put the tray in your mouth so your top teeth sit in it, press the button to turn on the fancy blue acitivating light, and wait 20 minutes. Apparently, Rachel Bilson and Emmy Rossum have used it so if it’s good enough for them then it’s good enough for us! iwhite can be purchased at CVS, costco.com and drugstore.com.