These 100% exceeded my expectations. My teeth were so stained and I used these for 2 months. They were so effective and easy to use. The only con was that my teeth were more sensitive for awhile. But in my opinion it was worth it. I would definitely recommend and but again.

I used the strips on my teeth and they were super white. Everyone that I encountered on campus said that my smile was gorgeous with my white teeth. I have only used this product twice within a seven-month span and my teeth are still white. So I would recommend everyone to use it! :)

Professional Effects is worth the money. It does hold up to it's promise of whitening your smile back to what you wished it had been 20 years ago. The strips are high quality that do no slide, mush up, or foam at the mouth. They are very comfortable and much less painful as far as sensitivity issues of past strips. The brightness also last longer than Crest and other white strips brands of the past. I can't say you'll have bright, chicklet movie star teeth, but it will make you look young again and gives your confidence a boost.

After just one use my teeth were whiter. I use it twice a month or so. Maybe more if I have an event coming up. I have sensitive teeth but I don't have any sensitivity using these! Price seems high until you price a professional whitening treatment at the dentist. Trust me. The previous version of these slipped around as soon as you put them on. They will not stay put if you were trying to talk... The never version is “slip proof”. They have a better grip to the teeth to start. I still don't like to talk too much with it on.

This is probably the best whitening strips out there. These whiten my teeth within a month of using them almost everyday and my teeth were pretty yellow. Yes, they're expensive but cheaper than going to the dentist for them to bleach your teeth. Does cause sensitivity if you use too much. If that happens then I'll stop for a couple days and start back up

You 100% can not go wrong with these white strips! I use these maybe once every other month and even using them they infrequently, my teeth stay super white. Sometimes I do have some sensitivity afterwards but that's only if I leave them on too long. They're expensive but totally worth the price.

I am completely satisfied with Crest 3D White Whitestrips Professional Effects!!! I have been a loyal Crest customer and the whitestrips line has improved drastically since I first tried the product years ago. Older versions seemed to slip around in my mouth and were inconvenient. Thanks to the improved product design, the whitestrips adhere to my teeth and stay put for the duration of the whitening process. I would recommend this product to anyone that desires a whiter, more attractive smile! I will definitely be trying the other products in the whitening line.

Does an excellent job whitening. Gave 4 stars because I feel that the strips are too short. I wish they extended a bit further towards the molars. The strips also cause minor discomfort on the gums and tastes pretty bad but not so bad to keep from using them. I attached a photo of 'before' and after only 5 treatments. There are 14 treatments in the box.Crest 3D White Luxe Supreme FlexFit Whitestrips - Teeth Whitening Kit

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!

I just want to say that this product is really amazing. I am 46 years young but my smile was definitely showing my age. I was getting very self aware that my smile wasn't what it was in my youth. Years of red wine and coffee had definitely affected my teeth in the worst way. The strips were easy to apply. Wait 30 minutes! It takes a little extra oomph to get them off. And then lightly brush and go. Within 3 days, my smile looks amazing. 17 more to go and it can only get better!