In fact bleached my teeth a couple of shades! I'm a maniac for teeth whitening, what I just did not enjoy, pastes, gels, end caps, strips, something worked, something not very much. This paste was the perfect choice - really whitens without causing discomfort and sensitivity of teeth! The only minus is the volume (you could have done more))) alternating it with xyliwhite, so as not to "sit" on a permanent bleaching! And so - happy on all of 100%!