This whitening product has been effective for me multiple times over the past few years. I have used it in correlation with other Crest products (such as toothpaste) and I have seen a noticeable difference. They only negative thing I would have to report is that it occasionally makes me teeth sensitive to heat and cold, but overall, I love the Professional Effects!

I’ve used these in the past and had great results. My teeth remain white and every once in a while I will re use for maintenance. The only con is the sensitivity. I would honestly use them more often if they didn’t cause my teeth to feel so uncomfortable. The sensitivity goes away within about a week of ending use though.

These are a MUST BUY. I’ve been using them on and off for years and they are absolute miracle workers. I only need to use maybe a third of a box and then my teeth are SPARKLING white for literally a few years. A great, cheap and easy way to get white teeth.

I used these when I got my braces off, and while I saw some results... they weren’t drastic. Probably not worth all of the money. If you want whiter teeth immediately I would use the Hello Activated Charcoal Fluoride Free Whitening Toothpaste With Fresh Mint Coconut Oil.

[This review was collected as part of a promotion.] These strips do the job. I always use these whenever I have important occasions coming up. I do see my teeth brighten up after few uses. The packaging also very convenient for travel. Absolute best!

I just bought this product and have only used it once so far I don’t see a difference in my teeth but I hope that with my treatments that my teeth will begin to whiten like the packaging says it does. If this works well I will buy again. And it is a bit pricey.

For an at home whitening product this is one of the best. I try to whiten once or twice a year and this is my go to. I see real results every time I use these. The only thing is my teeth become very sensitive after use but after using tooth paste with sensitivity components it helps and goes away. Worth it and would definitely buy again.

I couldn't believe how beautiful my smile is after using the Crest 3D Professional White strips. My co-workers, family and church members all noticed the change. My dentist will only see me once a year now. Sweet baby Jesus...My smile is white as Frosty the snow man

For the price these whitening strips are very good and after trying them for a few days the difference in the color of my teeth was definitely noticeable. I have worn the strips for an hour at a time and gone about my daily business. When it comes to taking the strips of its a bit difficult to do so and this part is where i got to taste the whitening ingredients which was not very pleasant. If you could make it easier to remove the strips after the treatment it would be brilliant.

The OG since day 1. Only white strip i trust to actually work. Makes teeth look like they just got freshly cleaned from the dentist. Only cons are that the price isn't as affordable as other brands and that the product makes my teeth painfully sensitive.