I have been using this for 3 weeks, once a day, for 1 hour. My teeth are the whiter than they have ever been before! I love it!!!

I used the most basic line of crest's whitening strips and still saw nice actual results over the short course of time I used the product.

this is definitely worth the money I have gotten so many compliments on my teeth just wish they were a little bit more affordable

My teeth were nice before I used Crest Whitening Strips, but after I used them I get compliments all the time. Very good product. Will use again.

I just keep getting compliments. People are always surprised when I tell them I use Crest White Strips.

I love these stripes. They don't slide. They are not uncomfortable like other brands. I'm one happy customer.

I use the 3D White professional effects for several years now and it works fine for me and will purchase again :)

I could definitely see results with this product. And pretty quickly. I will use the Professional Effects whitestrips again.

Crest white strips work just as well as professional bleaching, and it's a more affordable option. I would highly recommend this product.

Overall I liked the 3D Crest White, did not leave white like I thought would, but did notice a difference. Thank you.