http://www.health4welness.com/snow-teeth-whitening/ [url=http://www.health4welness.com/snow-teeth-whitening/]Snow Teeth Whitening[/url] The effects of whitening are thought to keep going up to three years. Regardless, this will change starting with one individual then onto the next. The effect is more disinclined to continue to go as long in case you smoke, or eat or drink things that can stain your teeth. Ask your dental gathering for their evaluation before you start the treatment.