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A small group of the population experience intenese teeth whitening pain which does not affect other people at all after having their teeth bleached This is mainly due to teeth sensitivity or gum irritation. Home teeth whitening products are actually safe when used in moderation Usually, most teeth whitening products present a common side effect: [...]

So you want whiter teeth.  It may be a combination of a number of reasons,

maybe you just need a pick me up, or the fashion magazines have finally gotten to you, or you quit smoking, or you’re realizing that you drink too much coffee.  Whatever the reason, you’ve decided that your teeth need whitening.
Two Basic [...]