Girlfriend has used the white strips before and she noticed a difference. I'd say use it in moderation though, can't be healthy for your teeth/gums.
Best way to do it, and the way a lot of celebrities do it, is to get their teeth removed and replaced. It's around $1000 per tooth, and it's more permanent than bleaching over time.
while bleaching is a relatively cost effective way of whitening your teeth, it commonly increases tooth and gum sensitivity and some types of bleaching can add a off-color hue to the teeth
'celebrities' don't typically use bleach (and rarely have their teeth 'removed' for cosmetic alterations, as others have mentioned). rather, they use veneers.
I thought so is it like a new shell around your teeth how much would this cost?

