Have you noticed how some people try not to show their teeth when smiling for photographs, or they cover their mouths when they smile? First impressions are important.Whether we like it or not, when someone sees us for the first time, they make important decisions and perceptions about us in the first few seconds. More often than not, the first thing people will notice is your smile. Would you rather go to a first date or attend a job interview with a set of nice and white teeth or a set of yellow and stained teeth?Our teeth get discoloured due to various reasons such as aging, staining, chemical damage, diseases or genetics. The most common reasons are usually smoking and stain-causing foods like tea and coffee.Today, cosmetic dentistry is gaining in importance and it no longer is for Hollywood stars or perfect-looking supermodels. It has become more of a necessity than before. A neat set of teeth is important, and so is the colour of your teeth.There are many ways to whiten your teeth. You can go to a dentist to have your teeth professionally whitened in just one or two visits, but that will probably cost you at least $500 depending on the condition of your teeth while those involving laser treatments will cost you at least $1000. Alternatively, you can try at home teeth whitening treatments which should not cost you more than $50-100. However, the concentration of the bleaching gel is milder than those used by dentists. Therefore, home whitening products will typically take a slightly longer time to show full results.An important thing note is that teeth whitening procedures are only for natural teeth and whitened teeth do not last forever. Yes, even if you have spent hundreds to whiten your teeth at the dentist, the results are not permanent. Typically it can last for about 3 years, but the duration varies from person to person depending on whether your teeth are in contact with tobacco, alcohol or dark-coloured foods.So why do you need to pay a high price spend time waiting for your turn at the dentist, when you can do the whitening at home, using what the dentist use? Start today, and give yourself that dazzling million dollar smile