Along with being eyebrow-obsessed, I am tooth whitening obsessed as well. Indeed. I’ve tried them all, no doubt. Here is a new one on the market, in a class I have been very intrigued with, this is iwhite:

This product has a tray that fits in your mouth, and has a battery operated light that casts “electroluminescent” light onto the whitening gel (which incidentally is located in foam pads that fit into the mouthpiece), ...