The Crest Whitestrips have been around for a few years and have spawned many inferior knock offs. What is great about Crest Whitestrips is that they really do whiten your teeth. But there are a few things you should know before purchasing them.
The Crest Whitestips are strips of a thin material that is coated with a gel that consists of hydrogen peroxide. The strips are placed over the front of your upper and lower teeth. The film will conform to your teeth. You wear these strips for thirty minutes at a time. You will have too apply two applications a day for 14 days. You will see a noticeable change in the color of your teeth around day three.
While I love how this product works it also has some drawbacks. First off they taste terrible absolutely terrible and it is a taste that you don't adjust two. Second, the length of time that these strips must be worn is a little inconvenience. Thirdly, thanks to the hydrogen peroxide your teeth will become very tender after application. This tenderness can stay up to an hour or longer.
Even though this product does has some drawbacks the fact that the Crest Whitestrips do work and they work so well (the effects can last up to 12 months) that the outcome far outweighs the drawbacks.