My PESSIMISTIC teen loves it
I am on this site to buy my second set.  I bought it maybe 15 days ago for my teen and he has now come back to ask me to get it again so it most definitely works.  I was going to take him to that kiosk in the mall which costs $100 but since this is cheaper and leaves you with the toothpaste for later use, I figure why not.
Rating: 5 stars