Review (5/5): Holy cow, it WORKS!!  Much more convenient than white strips
The other day, I looked in my mirror and noticed that my teeth were getting yellow. Hmm, I thought to myself, I wonder if there's a teeth whitening method that isn't as expensive and troublesome to use as white strips? I've previously used both Crest and Listerine white strips. While the white strips were effective, they left my gums feeling sensitive and were also troublesome to apply. Additionally, the feeling of looking like a rabid dog and foaming at the mouth didn't bring back happy memories of white strips.
So then I happened to pass by an endcap at the supermarket advertising Colgate Optic White. The claims seemed too good to be true; white strip active ingredients in toothpaste form?! Results in a week?! I checked the Amazon reviews online, and sure enough, others claimed success.
I've been using Optic White for about a week now, and I'm happy to say that YES, GO OUT AND BUY THIS RIGHT NOW!!! My teeth are much whiter in just a week of brushing twice a day with Optic White. My gums feel fine after each brushing session, and moreover, my teeth feel squeaky clean. There is some excess foaming, but not so much that it can't be gargled/rinsed away.
Highly recommend. Finally, an effective, convenient tooth whitening solution! Only downside is that the toothpaste does not contain triclosan, an active agent effective in defeating gingivitis. So break out that regular Colgate total from time to time.