I absolutely LOVE these! I used them to whiten my teeth 10 days before prom and I saw a difference. You must brush your teeth before using them of course. They do work fast. Even my dentist noticed how white my teeth were. If your teeth are sensitive it will hurt more. It doesn't protect your enamel. But your teeth are visibly whiter in half the time.

I loooooveeeeeeeee these so much! They work and the one that comes with the little stick to boost whitening is awesome (I'm not sure if this is the specific one) but it definitely does weaken your enamel, i can feel it when i drink which is why i stopped using it !

So these definitely work great but the using part is a bit tricky. They do not stick well to your teeth and generate a lot of spit. I highly recommend taking a towel and drying your teeth before using to aid in the stocking. But trust me they work you just have to deal with the small hassle of using them.

The Crest 3D White Radiant Express Strips work really, really well. My teeth look whiter just after using it a few times and I'm excited to see the results after the full 14 day treatment course. The strips are very easy to apply, they peel off easily and adhere to teeth without slipping. I didn't have any problem keeping them on my teeth for 1 hour, while I worked around the house. After I used them a couple days in a row, I did notice mild tooth sensitivity but it resolved as the day went on. I did take a break for a day from using the strips and it didn't happen since. I would recommend using these strips every other day or every few days if you have sensitive teeth to avoid sensitivity. These strips absolutely work great at whitening teeth. So effective and much cheaper than going for a whitening treatment at the dentist. I absolutely recommend these strips for at home teeth whitening!

I got these as a gift for my birthday. I've tried others before and I wasn't too excited to try another product that would irritate my mouth and not work. But these proved me wrong!! They're easy to use and I notice a differece already. I can't wait until I'm done!

They will make your teeth white, but they will DESTROY your enamel in the process. I would use these a couple years back so HOPEFULLY they changed the formula, but I will never take the risk again. While using it caused pain I my teeth that I tried by best to ignore, but the more I used them the more intense the pain became there was one point where I just couldn't fight through the pain any longer, and when I had removed the pain stayed. I took a look in the mirror because the pain was so intense and I saw a faint crack that went halfway down my tooth!!! The pain remained for weeks and it finally went away when I began to use enamel strengthening toothpaste, but my enamel hasn't been the same since. I totally regret ever using this product because I still have to be overly cautions with my teeth because my enamel isn't as strong as before. This product will whiten your teeth, but are you willing to put your enamel in jeopardy?

I loved using the Crest 3D White Whitestrips Professional Effects. They have really improved the look of my smile and everyone comments on how white my teeth are now! My patients that have tried these have also been very satisfied. I would recommend them to anyone who is looking for a bright white smile!

I love red wine, coffee, and iced tea. The worst possible trifecta for also wanting white teeth! However, crest white strips have saved my booty on more than one occasion. Following the directions exactly from the box has made a HUGE difference in the color and brightness of my smile. A huge huge confidence boost to have whiter teeth! Best money I have ever spent.

The first thing about this product is that it is crazy expensive. The packs are way to over priced. Another thing is that after using the stripes, i got very bad tooth pains due to my teeth being super sensitive but the stripes did there overall job.

Crest you keep doing it again and again!!!! I have been a loyal user of crest products for over 25 years. My grandparents used the famous brand, my family uses the products and now my children are using the brand, too! Quality and reputation are second to no-one! Crest's newest product line of Whitestrips are the best yet and after just one single application you will see and feel a difference better than what can be achieved at a dental office. Crest...thank you for making the World's smile brilliant...one strip at a time!