Arm & Hammer Whitening Booster - $5.79 per 2.5 oz tube (at least around here). It is a clear, odorless, tasteless gel that you add to the top of your regular toothpaste. I could see a slight difference the first time I used it. I used the first tube every day but after I got to a good 'brightness' I cut back to twice a week (don't want to look too fake!). You'll probably want to use slighly less toothpaste than usual as the combination can get quite frothy and messy. It's much cheaper and less intense than the strips and other harsher whitening chemicals which can eventually damage enamel. I'm hooked.

Beauty tip: Dark, matte lipsticks make teeth look brighter and shinier. Sheers and glosses make teeth appear dull and flat.

'And those seen dancing were thought to be insane by those who could not hear the musicNietzsche