This depends on you. There can be many variables at play. You may have a certain gum disease preventing quick white teeth but thats ok. Make sure you have a routine time of brushing to keep plaque down. In time your teech should start to lighten up. If not try to drop by your dentist for a cleaning!
A teeth whitening kit, like the one I use by Power Swabs, contains a bunch of maintenance swabs, white swabs, stain-out swabs, a mouth wash and a toothpaste. Together they help whiten your teeth, without having to visit a dentist and without any procedural teeth sensitivity.
There are a couple of places near Dallas, TX that offer teeth whitening for under $100. At Perfect Ten in Dallas, TX they offer a great teeth whitening special that fits your budget needs.
They brush and floss their teeth regularly. Some of them use Crest White Teeth Whitening Strips.
White the sun will not whiten your teeth on it's own, it may improve the whitening effects of whitening gels due to the UV light within the sun's spectrum.
White Kiss is a teeth-whitening system. See related links.
Arm & Hammer Advanced White whitens your teeth the most.
Whitening teeth is not a new process. The ancient Romans actually used different products in order to keep their teeth white or to whiten them further.
Optident is a teeth whitening procedure which is used to reduce enamel stains on one's teeth and restore the teeth to a natural finish. Teeth whitening is available for anyone without a gum disease.
the one with extra whitening power
One can find a dentist that specializes in teeth whitening in the white pages. Normally they give descriptions under their ad's. Most dentists specialize in it.
The fastest and most reliable solution is the teeth whitening kit from Crest 3D White Luxe Whitestrips Professional Effects: http://bestwhiteningtoothpastepro.com/crest-3d-white-luxe-whitestrips-professional-effects-teeth-whitening-kit-20-treatments/
People who were born with teeth that weren't naturally white might want to have teeth whitening done. People who smoke or drink lots of coffee might also lose luster in their teeth and would want to have their teeth whitened.