[This review was collected as part of a promotion.] Dentist recommended for whitening! Love the crest brand, can cause sensitivity* but that’s any major whitening - ease up usage / use less often if you experience sensitivity! Works very fast, couple days and you can notice a difference! Combined with toothpaste, mouthwash and the strips your teeth will be shining!

I've only used maybe 5 treatments so far but I can already tell a difference. I drink coffee (a lot of it) daily and started to notice my teeth looking a little dark. I have veneers in the front and I know that these don't whiten them from their original color, but they are lightening the coffee staining. I love that they made them no-slip also, as the old version would slide all over and made it difficult to talk. These things stick on HARD and pulling them off sometimes seems like pulling off a new band aid.

I am furious! I read the entire package before use and it said NOTHING about turning gums white. In fact, it only mentions tooth sensitivity and gum discomfort! No warning about turning your gums white. It also says that sensitivity and gum discomfort will not harm you. I'm pretty sure a chemical birnio when I felt that discomfort I just left the strips on!! I did my best to keep the strips off my gums

I have used this product in the past and it worked like I would have imagined I was vary happy. I stopped using it since it was a little expensive for me. I recently bought this product again and I see almost no results then before. I don't smoke or drink coffee and expected the same results as it used to provide. Maybe there something wrong thins time with the product. I do wish to have my money back or a discount to buy another box and see if there is something wrong with the product or just the one I bought.

I've used this product a lot and I have noticed my teeth get whiter when I do use the strips. I usually put them on before showering and then do my hair and stuff before taking them off then I brush my teeth. They do cause tooth sensitivity sometimes which is really uncomfortable but obviously that will happen. I would recommend this product to someone who wants a brighter smile!

[This review was collected as part of a promotion.] I received a free full-size box of Crest 3D White Strips from Influenster in exchange for my honest review! these white strips claim to lighten your teeth by 12 levels in three weeks… I’m not sure about that but I definitely noticed my teeth look whiter and I’m very happy with the results! They’re easy to use! I use them in the evening while I’m watching my show. They stick on my teeth pretty firmly and I just keep them on for 45 minutes. The only downside is that a little bit of foamy-ness and spit accumulates in my mouth while I’m using them so I have to constantly spit that out. Other than that… worth it for white teeth!

If you're going to do this at home this brand is the way to go. They're gentle but work and I didn't experience tooth sensitivity until around 5 days of doing it. I actually just use them when my teeth start looking a little dingy and it works. I've never had my teeth professionally whitened and maybe I will one day. For now this works for me. I use it with an oral led light as well sometimes.

I have tried alot of other whiteners and none of them have compared to this one. To me it's easy to use and not as messy as other whiteners i have tried. I use this about once a month and have had no issues with it. I would indeed buy it again because it works so well.

Worst product ever! I bought these less than a month ago because of the low price. I’ve used other crest whitening strips and have never had a problem with them. I used these crest white strips the recommended way for 30 minutes and I started to notice my gums would start tingling and burn so bad that I had to take them off sometimes. I started to notice my gums were turning white and even starting to recede. I am so upset and want my money back. I can’t believe they are allowed to sell these.

After purchasing the crest 3D white strips I was very nervous to try them because I have very sensitive teeth and was afraid of them hurting after. I tried them for two weeks and surprisingly never had an issue! I am a college student and work in retail so I'm always trying to improve my appearance. These are a great, affordable solution to do so. I now receive so many complements about how white my teeth are and people even ask if I get them done professionally. I tell them about the 3D white strips and my great experience and they are shocked! Many of my friends have purchased after hearing what I had to say and they also had great results! These are deffinatly the best whitening product a person can purchase.