Bright white smiles are like handshakes. They're disarming right off the bat. That is why millions of people are investing in teeth bleaching products or procedures. That is also why most of these treatments are worth it.
Tooth enamel is fairly easy to lighten by using simple basic chemical agents such as hydrogen peroxide or carbamide peroxide. If you add a little it works. If you add a lot it works better. Either way people have been satisfied with most of these products. Years ago tooth discoloration was an embarrassing subject but today when most ask a friend or colleague there is not only an admittance of using these treatments but recommendations.
The risks of using teeth bleaching products are mostly minor such as tiny burns from the causticity of the agent on the inner gums. If even needed these are easily treatable even if the directions are followed there's usually not a problem.
Everyday teeth get soaked and covered in all sorts of things including coffee, soda, chocolate or wine. If a person smokes that's a double whammy. Regardless, it's only a matter of time before most folks are walking around a little less white in the bite. The best way to check your teeth is to look in a mirror. Look close. If you've already hit age thirty you'll most likely see some staining. At this point there's no need to go running to your dentist. A simple teeth bleaching gel or strip could do wonders. Usually they're put on at night and slept with. In the morning you're good to go.