So it is important to keep your teeth stain free and white and you can use Spark Whitening Teeth Whitening kit for this purpose. There are many other products available in the market like whitening strips and natural whitening medications but all these are not as effective as the whitening trays are. Your scenario is a path to generate more types of Easy to use kit. You can get more info about this kit from the official website of the product. The teeth whitening solution that comes with the kit contains carbamide peroxide which according to researchers is a very effective compound for reducing stains from your teeth which develop on the teeth over a long interval of time. Read more on :- http://glowteethwhiteningrev.com/spark-whitening/