I have been using for 2 weeks and haven't noticed any change. A couple packs of my strips wouldn't even stick to my teeth. Very disappointing. I'm guessing I received an old product.

Are used to wear these the night before I cheered games in college because I never knew when I was going to be on camera and I always wanted a perfect white smile

Seem to work. They do make my teeth extremely sensitive to the point where it hurts to breath even with less time than recommended I wish I could do it more but I know it destroys your enamel.

This product definitely works very well. After I finished the box I noticed my teeth were alot whiter and I got a ton of compliments on my smile!no have repurchased this several times over the years

These things work!! That’s it, that’s really all I have to say. They work very well, very quickly. Only had to use.... maybe three, to get my teeth white. The rest of the strips I gave to my family because I didn’t need them.

These work!! It's crazy because I have super sensitive teeth and I had no issues!! I would totally buy them again and recommend them to anyone looking for good results that don't take long or break the bank

I love the results of this crest 3D whiting. This product whitens more then other products. I don’t have any problems using it. I buy and use this product once every two weeks, I’m very satisfied with results.

I used the whitening kit 30 days before my wedding. I used it once but I would try it again. The product is great and my results were awesome. After the virus ends I plan on buying it again. I would recommend.

I love using these! I get compliments daily about how white my teeth are from using them. I notice a difference after just one use. Crest 3D White Luxe Professional Effects Whitestrips - Teeth Whitening Kit

I get worried about getting sensitive teeth when using these, so I don’t use them as much as I’d want to. But when I do use them, they work and make my smiler whiter!