Thank you SNOW! I love what I see in the mirror! I did have to increase the time I use the device from half an hour to an hour to get the results I wanted to see a little faster, but that was easy enough to do. I have also started to use the red light therapy for gums and it's making a positive difference as well. I read an article from a dentist saying light therapies don't work. I'd like to show him my teeth before and after. SNOW really works! If I could change one thing, I would make the button harder to turn off because I find it will turn off or change therapy extremely easily and I don't catch it right away.