This product does what it says it will do. Whitens my teeth and doesnt leave them feeling overly sensitive. I usually whiten once every six months to keep up with the color. If you want a cheaper alternative, go with target's up and up brand. Works just as well for a cheaper price tag.

Absolutely love this product and the results that I have seen from this product. My teeth have become so much whiter since starting to use this about 4 years ago. I whiten my teeth about once a month and have done it for about 3-4 years and it has stayed consistently white over all this time. The only complaint I have is when the strips go on the teeth, it is extremely difficult for them to stand in place as nothing is holding them there. Personally, I put my retainer in on top to hold them down so I can get the most out of my strips, but others may not be able to. They seem a little bit more pricy but I am willing to pay for something that works for me.

I absolutely love crest whitestrips. I tend to use them more often leading up to a special event. I used them frequently leading up to my wedding and my teeth were pearly white for my bridal portraits! I also have sensitive teeth and these strips don't irritate me or cause more sensitivity.

Use these a couple times a year to refresh my smile. They work just as good as professional whitening in my opinion! My teeth get a tiny bit sensitive but nothing that causes discomfort. They fit right into my teeth and make my smile noticeably whiter!

The only thing that's gotten my teeth to whiten these past few years! It saves you so much money from going to an actual teeth whitening place, and you see effective results within a few days to week. I try to do these every 2-3 days, and get another box for maintenance every 6 months.

I've been using these for a few years now. These are my absolute favorite! They make my teeth a little sensitive after using but other than that, they're great! I notice a difference when I do use them. I recommend this to anyone who needs to start using whitening strips!

I saw a difference after 1 use. After using the whole box, my teeth are much whiter and prettier. I get my teeth cleaned twice a year, but I'm 49, and my teeth were looking dingy and yellowish. Now they are a lovely, natural white, not a weird, radiant, high-beam white. The strips are dry when you put them on, so they're easy to handle and place. I used them in the morning, when I was getting into the shower. That way, my teeth were clean from the night before, but not sensitive from being freshly brushed. When applying, I'd start from the center, poking the strip into the spaces between my teeth with my fingernail, so that the whole tooth was in contact with the strip. They didn't budge after pressing them in place.

I use crest 3D whitestrips. Have used the crest whitening strips for many years. I had my teeth professionally whitened years back, but that fades over time. I keep them nice & white with these strips. I've tried other brands, but they are a waste of money. Crest is the best!

I have used Premium Plus White Strips in the past and have had AMAZING results!!! I decided it was time to whiten again after almost 2 years and decided on the Pro Effects.In my honest opinion they are not what I expected. I do not smoke, drink coffee rarely, never drink red wine, soda once in a while...nothing consistent enough that would stain my teeth...so I did expect more from these strips. That being said maybe I bought a bad batch of strips?!? I do have faith in crest products, just not very happy with this particular product.

This product saved me tons of money compared to the price of professional whitening from my dentist! The results were just as good as professional treatments I had received in the past but for a fraction of the cost. I would recommend using these before any big effect for the whitest smile possible.