Opalescence Go 10% - Prefilled Teeth Whitening Trays Kit (10 Treatments) - 10% Hydrogen Peroxide - Mint Made by Ultradent Products. Go Teeth Whitening Kit -Mint- GO10-5193-1

Works great unless you have a crack in your tooth and then the pain begins. Easy to use no taste just creates saliva.. unfortunately I could only use two packets due to crack and tooth.

Love this item! Whitens teeth very well.

These are worth every penny!! Best whitener and so easy to use

It does a good job of whitening, it's noticeable after a few sessions. My only issue is the inner tray often stays stuck in the outer tray. I bite down the way the instructions say, but when I remove the outer tray I often find the inner tray is still inside and then it's a mess to try and get it in place.

Highly recommended by my dentist. And it DOES whiten my teeth.

Only whitening product ive used that I have seen a noticeable difference. Takes until the next day after treatment for me to really notice a change. Occasionally my teeth will be a little more sensitive for a couple days after using but definitely tolerable. Will repurchase.

I was very excited for these, as Opalescence is the brand recommended by my dentist, and I’ve had issues with other products and sensitivity. The green trays they come in are functionally useless, they make the inner trays fail to adhere to your teeth. Instead of sucking for two seconds like the instructions state, you’ll be sucking for two minutes. I worked around this, but it is also clear that sucking fails to move the gel strip on the bottom throughout the tray, which causes uneven whitening. I had to discontinue after using three because it was only whitening the tips of my teeth.

These don’t always come out of the tray like they should. It’s hit or miss. Instructions say to bite down then the strips should adhere to your teeth and you can then remove the tray. However, sometimes the bleach strip doesn’t pull away from the tray. They do work though!