I am only 5 days in and I have already noticed an extreme change in color of my teeth. You wear the strips for 1hr a day. The strips are big, so I cut them in half (horizontally) and get double the use out of them. My teeth are usually sensitive and I have not experienced much sensitivity at all throughout the 5 consecutive days I have been doing the treatment.

These white strips are great! They stay put, don't have a weird taste, and since they stay in place, you don't get gooey whitening product seeping into your mouth and gums. I noticed a huge difference after only one strips, and my teeth haven't been this white in years after using 5 strips total. Can't recommend this product highly enough.

I swear by these! Every time I have used as directed, someone has pointed out how white my teeth look (I generally used about 2-3 a year.) I get minor tooth sensitivity, but the results are well worth it and it doesn’t last very long. I have tried store brand versions, but I feel like I get the best results with these.

I was amazed at how quickly this product got my pearly's polished and white. I noticed immediate results! I used the trio of the strips, the toothpaste, and the mouthwash and have to say it is the perfect way to get a glowing smile - fast. Is it wrong that I actually looked forward to using the products each day? I must say, it's quite satisfying to watch your teeth become a mouth-tastic masterpiece. Whether you are getting prepped spiffy for a date, have a reason to celebrate or need a reason to start smiling more - these strips will give you the confidence and the results you need. I would not use any other product!

I have used this product white a few times. The process is easy and not too time consuming! After i use the white strips, my teeth always look a lot brighter and cleaner! I use these every few months when i feel like my teeth really need them and it totally helps out!

IT WORKS! You don’t need to go to the dentist and pay a ton to get an amazing smile. The 3D white strips do an amazing job. My teeth have never been so white. The best part is that it doesn’t make my teeth feel super sensitive like some other brands. Honestly it’s a bargain! I have and will continue to recommend this product. My partner and I will continue to purchase these for a long time!

I used to use these while getting ready and doing my makeup in college. They're a great product and over time you can definitely see a difference in whiteness of your teeth. I would recommend this product to anyone who is willing to wait and be patient for results

I love Crest Whitestrips. I used to use them a few times a year and had the whitest teeth, they would glow in black light. But not unnaturally white. Just free of stains. It’s an excellent effective product, a little messy though and kind of a production to use but worth it all. The strips have a whitening gel on one side that molds to your teeth. You leave them on for a certain amount of time, I think it was around 30 mins but don’t quote me. You can watch a movie or distract yourself while you wait, drooling a bit and occasionally adjusting the strip, which might numb your gums just a little. So much fun. But again, like I said, it’s really worth any mild discomfort for the noticeable whitening effects that are much better than toothpaste alone. I hope to buy some again soon.

I got these white strips to use before my wedding and the results were amazing! I definitely achieved a brighter smile with this product and lasting results! I would totally recommend this product and believe it is a great price for how well it works!

The three whitening levels on the 3D line are visible, dramatic, and professional. Naturally, my expectations for the Professional Effects strips were very high. Unfortunately, my results have been extremely disappointing. I even went so far as to supplement the strips with the 3D mouthwash, toothpaste, and brush. Still the results are barely noticeable at best. Crest gets a point in the performance category as the new advanced seal strips do a great job holding to teeth. But at the end of the day, it’s the whitening that counts. And these strips lack the ability to whiten at anything remotely close to a professional level.