My teeth are so white now!!! And I'm not quite sure how because I drink a lot of coffee and enjoy myself some red wine Seriously, I look like a girl in a Colgate commercial thanks to Boon (the owner and operator). Such a cool, nice guy - he made the process fast and fun and PAINLESS! What he uses is medical grade, yet gentle enough it didn't cause sensitivity. It's all natural ingredients too! I've tried a lot of whitening treatments from Zoom at a cosmetic dentist, to bleach trays to whitening strips...nothing works this good, and minus the pain (major bonus!) I don't even need to tell you, just look at my pic...