Didn't stay put for me, so it was hard to keep on the for the full 30 minutes. And the gel was moving and tastes gross.

Its easy use. I carry a set in my handbag in case I have an unexpected appointment.

I bought this proudct a few weeks ago and waited about a week to use it. Finally I used it and I hated them. The first day was not bad at all .. I was actually impressed but the second day I used them and almost every bit of the gel came out in my mouth which was making me gag. I decided seems I payed for them I might as well give them a fair chance. Well, everytime I used them it did the same thing. And they don't stay in your mouth at all. When I would try to say even a couple words they would fall out of place. It was very difficult to keep them for the recommended amount of time (30-45 minutes). I did notice a little bit of whitening in the first day or two but nothing after that.

if you want fast results use this product! I've used a few whitening products and this one is definitely the most difficult to use BUT they whiten the fastest of all of them I've tried. I think that it's worth it. My boyfriend noticed my teeth were whiter after only two trays!

Gel sometimes oozes out of tray but whitening effect is immediate and long lasting.

Years ago I paid my dentist to make special trays and sell me a whitening gel. This was very costly. Now I just finished using the Aquafresh trays and will tell you that the gel used tastes exactly the same as the one my dentist sold me years ago. It works fast; in fact by the third tray I saw a big difference. The best thing about this product is that you need to use it just ONCE a day. Don't worry about the tray sliding, etc., as It will still work. A little patience was worth my white smile. I am buying another box for my friend that lives in Europe. She'll thank me for it.

The trays are to small for the teeth. They do not form around teeth properly. The 3 front teeth get covered but the ends of the tray stick up so you don't get complete coverage. DON'T BUY

I am on my second day with this product (in fact I'm wearing them while I'm writing this review), and while it does seem that the whitening aspect of it is okay, I think the trays are truly horrible. They are small and made out of a thin, flimsy plastic with a little strip of whitening gel piped in each one. Once you put the trays in, you have to press on them to spread the gel out over your teeth. I find that within a few minutes, the gel starts squishing out the sides of the trays and into my mouth, which results in semi-firm, slimy little globs of gel swishing around that create an excess of saliva (which then foams up from the product) that I then have to spit out, which disturbs the trays because they don't stay in place very easily as it is. The last time I did this, the bottom tray fell out and all the gel slipped off into the sink. I am no stranger to whitening products (or following directions for that matter), so I don't think the problem is me. I am very disappointed because the whitening action does seem to be working, but I will never buy this product again. It is extremely unpleasant to use. In the past I've used products with plastic trays that you can actually mold to your teeth ahead of time, and then fill with the gel each time you use them--I'm going to go back to those in the future.

I had used the white strips a couple times before but they slid around and results were so-so. This product stays in place and even my dental hygenist noticed my teeth were brighter. It is easy to use and much more affordable than what the dentist offers.

I have very sensitive teeth, and after 5 days of using the toothpaste, I'm on my 3rd day of the trays, and it's whitening w/o any pain. My only complaint is that the trays are too small and cover just the front and side-front teeth.