they work but watch out for teeth sensitivity, i like this for a quick “treatment” before events and for quick whitening methods, consistency will bring better results but i wasn't.

As someone who drinks coffee everyday, all the time. My teeth have been stained an awful yellow color. I was a bit wary at first, because of the price point but it definitely is so worth it. I instantly saw results after the first use.

Okay I can't tell if these work. They seem to, but not a huge difference. Also the strips are incredibly uncomfortable and the longer you have them on, your teeth actually get sore from the whitening solution. Not worth it to me.

This brand is the only brand that I have found to actually make a difference. Usually after 2-3 times I can already see my teeth so much whiter than they were before.

I really like this product. I have purchased whitestrips before a couple years again and they always slipped off. It seems like Crest fixed this issue. They whited my teeth very nicely.

Not super effective but good enough, I have calcium deposits though so I had to have a special procedure done since all whitening products made the spots whiter so it was hard to really judge it.

I think they improved the adhesiveness of the strips to make them stay on much better. They don't slip off, so you can do other things while whitening your teeth

I think these worked pretty good! I wouldn't say it was a life changing effect but I feel like my teeth did get a little whiter after using for a week.

You want white teeth but don't have the money to go to get them professionally whitened well this kit will solve all your problems. Before bed and after you brush your teeth use these strips daily and your teeth will look like pearls

I've used this before any big even that I have and it doesn't wonders! Before proms, photo shoots, or even my wedding. If you are needing pearly whites fast this is your best bet!