This is one of the best samples i have ever received. It actually works like they said it would, and we all know you rarely find that. Anyone that is going to try this, do it!!! It works great.I started using it as soon as i got it in the mail and after 2 days i have seen the difference. I have tried lots of whitening products but they never worked on my upper denture but my real bottom teeth looked good. Well, supersmile even works on dentures. I promise you will love it. And hey, if any one of you out there find a 50 gallon drum of supersmile laying on the roadside anywhere, you know who to bring it to.thanks.