Read the previous reviews and expected some sensation on the gums and awful taste like the rest of these type of products but was pleasantly surprised. Also pleasantly surprised by the results. My teeth brightened by at least 2-3 shades. Will probably do another one in a few weeks. I spent $100 at a kiosk in Miami that was supposed to whiten your teeth in 30 minutes and was guaranteed to last 18 months. I walked out with blistered lips and gums and teeth that were slightly whiter but went back to normal after 1 week. This brand was 100% better and a WHOLE lot cheaper!!!

I have used white strips in the past with great results. The only problem with them is the time it requires. I first bought this product a few months ago for my boyfriend who has bad teeth. I knew he would not keep up with the white stripes so the 2 hour idea sold me on it. I saw no change in the color of his teeth. My teeth are not as white as I would like them to be so I got it as a touch up. It was uncomfortable in my mouth. The plastic mold cut into my gums. I keep duelling. I can't talk or cough with it in my mouth (unlike with a white strip). My throat became very dry making me more uncomtable. The taste I did not mind. But the gel was at times burning my gums. The only plus this product appears to have is the one time 2 hour application. But honestly even if you buy a 30 day Crest white strip and only do it once a day, every other day, you will see better results and be more comfortable than with this product.

The 1st day, my inner lip felt kind of irritated but when I used it the 2nd day, OMG! It gave me blisters and the whole inside of my lips and gums were raw and inflamed. I didn't even think it whitened my teeth very much at all. I will stick to Crest Whitestrips.

I usually don't write reviews but this product is so bad that I had to. My teeth didn't get any whiter and even though I was very carefull to make sure that the gel didn't touch my gums they are totally destroyed. For the last three days I have had blisters and bleeding gums and no improvement in sight. I haven't been able to eat/drink, Can't brush my teeth, I use an oral rinse to keep the pain at bay (which also cost me $12). So besides pain and destriyed gums I have nothing to show for. I am looking to get my money back. So don't waste your money on this product.

I did this in the two hours and found the bleach part to work great. It whitened my teeth a lot. However, it was pretty hard on my gums by the third round. It took 3-4 days before my gums felt better. I would recommend being careful not to get this on the gums, but other than that it works great (especially for the price).

Both my partner and I used the product and loved it!! it tastes like mint too. The only con was the burning and irritation that occurred to my gums, otherwise I truly recommend it!!! Especially expresso coffee drinkers!!! Didn't have any sensitivity to my teeth though...OVERALL, I HIGHLY RECOMMEND this product!!!

Had rouble getting trays to fit properly. Whitening effect was OK, not great. Would rather use strips for 7 days.

I would not use this product again. I really did not see enough of a change in color to warrant the expense.

I tried this once and it whitened my teeth a little bit but not as much as I was expecting from the description. its also a pain to go through the whole process...for 2hrs!

I have tried other whitening products and have been very disappointed in them. This was the only one that gave me close to dentist whitening.