I received Colgate Optic White Toothbrush with built-in whitening pen and toothpaste courtesy of Influenster for testing purposes. It is definitely easier and quicker than using whitening strips, and didn't cause any sensitivity that I've experienced with whitening strips in the past.
At first I thought this dry shampoo was great, but it turns out it only lasts about an hour or two before I'd notice my hair becoming greasy again! I have since bought different dry shampoos and found one that works MUCH better, and smells better too!
I bought these when they first came out and I was really excited to try them but they're kinda hard to use, and I'm pretty good at painting my nails with both hands...the pen-like tip is hard to control