I’ve used many at-home treatments. Instead of wasting more time/money & barely noticing a change, I decided to give this a try. This was well worth it! My teeth whitened MULTIPLE shades! I am so happy with the results that I plan on seeing her after every dental cleaning! Note: I drink coffee multiple times a day for 25+ years & it whitened from a 15 to 10. Thanks, Angela, for working your magic!