Do you ever find yourself covering your mouth when you laugh or smile? One telltale sign that it is a good time for you to whiten your teeth is if you are embarrassed to smile because of the color of your teeth. Yellowish- brown teeth are the result of years of coffee, tea, or cola drinking and/or smoking; or could even be a result of aging. There is no reason to be embarrassed any longer because of the color of your teeth! There are fast and easy ways to whiten your teeth! Try it - you'll be glad you did!