An excellent kit for teeth whitening, periodically go to the dentist for these purposes, you know what their price is, and here in the set there are 3 pencils, it is convenient to use to use very many positive moments. To belezna, which you did not have, does not bleach)) but for 1-2 tones, the teeth will become lighter, that is, will remove the coffee from the the the Convenient to use, in general, dough, I like