Just a quick side note, this is only the bleaching gel. You must provide your own trays in order to use this product. The reason why I say that is because I recommended this product to a friend and he bought it but didn't realize that you need to provide your own teeth whitening trays. I believe they sell whitening trays some where on this site, if not you can have your dentist make you some, but its more expensive. Anyways back to the review, this bleaching gel is very strong and will get your teeth very white. The reason why I purchased these ones is because my teeth where heavily stained from years of coffee drinks, soda, and smoking. My first teeth whitening kit was the opalesence 15% Carbamide Peroxide which work ok, it made my teeth 2 shades whiter then what they were before, but they were still pretty yellow and stained. And no matter how many times I whitened them they just did not get any whiter. So after doing some research I find out the Hydrogen Peroxide is a lot stronger then Carbamide Peroxide. So I purchased the 9% Hydrogen Peroxide by Dr.Collins. After just 1 syringe (4 applications) my teeth were 3 shades whiter then before, I was super impressed, and finally happy with the color of my teeth. Also just another cautionary note, this stuff is stronger so if you have sensitive teeth like me, you definitely want to invest in some sort of desensitizing gel, it makes the world of difference.
By James from Mi on 04-26-11