Teeth Whitening Options : The enamel is the outermost layer of your teeth that you see, the enamel is the hardest substance of your teeth structure that offers protection, shine, and color to your teeth, but the time goes by, there is a constant decrease of tooth layers because of the food and drink consumption, medicines intake, wine, or smoking. If you find your teeth are affected, you should opt teeth whitening procedure to ensure their color and shine. Â