This is why this system works so well for even stubborn coffee, tea, soda, wine, and cigarette stains on your teeth. All in all, the Snow whitening system is pretty low-lift and gave more significant results than I've had with any other at-home whitener - sans pain and irritation. Read the instructions and directions on the product boxes on exact wear time for each whitening system you are using. Depending on how strong the product is, you may need to wear them for 10 to 20 days. After a…