Opal by Opalescence Go - Prefilled Teeth Whitening Trays - Gentle - (7 Treatments) - Hydrogen Peroxide - Cool Mint - Made by Ultradent. Op-Tr-Gentle (1 Pack, Classic)

I'm not one to leave reviews unless the product is outstanding or exceptionally bad. I'm not being compensated by anyone for anything. I'm just a guy... I am happy to tell you, these work great. I didn't think to take before pics but to be honest, in the right light, my teeth looked orange. I guess that's what I get for smoking for 45 years & drinking coffee for 40 years.My teeth are sensitive & I've had bad reactions to other products of this type over the years. I started with the gentle kit & used one set every other day. I wasn't happy so the following week I bumped it up to the medium kit & another gentle kit. I alternated the gentle & the medium with a one day break in between. That was about 2.5 weeks & my teeth look great. I've got plenty left over just for brush ups. These are great.

Got these before a wedding. I’ve had my teeth whitened before and find these good for maintenance. Worked well. Gentle. Didn’t irritate gums. Only negative is the trays are quite small. Had to push them down so they’d fully cover my front teeth - top and bottom. Other than that I’d buy again.

I have been using the gel based whitener by this brand that I have purchased from my dentist for years.I tried this out thinking it would work just as well without the cleanup of trays. The heavy material did not easily adhere to my teeth and felt awkward. I held out until the end hoping it would work by the last treatment but nothing was whitened as promised and was a complete waste of money.If you want strips, stick to the drug store brands.

I’ve tried a lot of “white strip” brands, and these have been hands down the best. I was most impressed that they whiten all surfaces of the teeth, including between the teeth, which white strips can’t. I had zero sensitivity AND better results than I ever have with any other brand. The little trays suction around both sides of the teeth and the gel reaches all of the nooks and crannies. Highly recommended!

Not really happy with this product! It’s flimsy, hard to use and the results are not ideal. I am going to try another product.

I am 67 years old. I have been a daily espresso drinker. I smoked for 43 years before quitting 5 years ago. I knew my teeth were stained, and although I brushed daily, I did not truly do anything else. My dentist recommended Opalescence. I have been using the trays and toothpaste daily. It has changed my oral health tremendously, and I smile so much more now! My mental health has also improved, as many more people smile back at me.

I received the product and the first tray in the package is completely empty. It was sealed but empty when I opened it. I went through the other six and they are fine, but missing the one is frustrating because it recommends to do it for 7 days, but I only have enough for 6 days.

Item probably worked as expected. They did whiten my teeth, but not very noticeably. had no issues with sensitivity. Will try a version with higher peroxide next time.