i'm typing this review as i have the whitestrips in. ive been using them for 3 days and i already see my teeth about 3 shades whiter! they really stay in place because of the advanced seal, which is great. teeth are a little bit sensitive but not overbearing. totally recommend this product. not extremely expensive either.

So expensive so four stores. But they do work. I recommend doing top teeth then bottom rather than both at the same time. I personally noticed a difference in the matter of using it only a couple of times. Make sure you get the ones that have a strong adhesive so they stick to your teeth and don’t slip!

The package claims that you can see visible whitening after only 3 days. This claim is true. I've never whitened my teeth before but they weren't too yellow to begin with and I noticed the difference after 3 days exactly. However, I also have sensitive teeth and by the third day, the strips had increased their sensitivity. The instructions say that if your teeth are sensitive, start using the strips every other day (instead of every day), so that's what I did. The sensitivity stopped immediately after skipping a day. I used the rest of the package in a similar manner: using the strips every other day, sometimes using them two days in a row. The whitening continued just fine using this method. My teeth are extremely clean looking now, but not that fluorescent look some people get with over-whitening. They just look pretty and clean.

I used these when I had some coffee staining on my teeth. I think it did a pretty good job at making my teeth a little more white. They were pretty easy to use. You have to leave them on for about an hour. They taste really bad, but I don’t think that’s there anything that can be done about that

These are pretty incredible for lifting the coffee and wine stains that build up on my teeth very quickly. I think they are easy to wear and don't slip and slide. I like to put them on while I take a shower and blow dry my hair/put on makeup. They give a noticeable difference. I removed one star because I have sensitive teeth and I DO notice that my teeth feel sensitized for about a day or two after I use these. For that reason, I only end up using them about once or twice a month.

I like that they help whiten your teeth, the downfall is the price, as well as the taste. It tastes horrible and doesn't work as great as you would like considering the price point. I will be trying different products to see if there is a cheaper or more effective alternative out there. 

[This review was collected as part of a promotion.] Easy to open packages. The strops are user-friendly to apply and can be removed in 60 minutes, so it's quick and easy. This product has peroxide in it and becomes super... foamy??? Is that the proper word? Either way, it can feel very awkward. Myself and one other member in my household tried this product. We both had throat issues. My throat became very painful. To the point I had to remove the strips and rinse my mouth. My gums bled as well. The same happened to my family member. Teeth did appear whiter after one usage but that could be wishful thinking or the strip peeling off other stuff on teeth.

[This review was collected as part of a promotion.] I’ve tried Crest whitening toothpaste and the original crest white strips previously and had good results but didn’t expect to have such great visibly noticeable results so soon after only using three of the white strips. I am a daily tea drinker and use turmeric white often in my food and drinks, so my teeth weren’t as white as they could be. I usually use a teeth whitener to upkeep my teeth but didn’t notice a huge difference in the color of my teeth. After 3 uses of these white strips for only 10 minutes per whitening session, my teeth weren’t drastically whiter. The only downside is I noticed my teeth became sensitive after the first use. I was afraid of tooth sensitivity so I lessened the recommended time of use and only put the white strips on for 10 minutes. I had to use Sensodyne toothpaste in combination with these white strips to prevent further tooth sensitivity, but they do work and made my teeth at least 3-4 shades whiter than before. I plan on using the rest of the white strips in the kit, but I wanted to spread them out further throughout the next few months to give my teeth a break from the sensitivity.

I really like this product. I drink a lot of coffee and I love red wine both of which can cause teeth staining. I use these strips 3 times per week and I get great comments on my smile, especially in photographs. I've gotten my daughter and fiance to use these too.

The Crest 3D White Luxe Supreme Flexfit Whitestrips Teeth Whitening Kit leave my teeth nice and shiny white!! I have sensitive gums though so this does sometimes irritate them after using them multiple days in a row. They’re a bit pricy but still worth it