To start, I've used whitening strips before. And they've always worked very well on me. I never had any sensitivity to any sort of strip, so, I was confident that Crest's newest 3D whitening strips would be fine for me. And they were!
After just 3 days of using the strips, I noticed a dramatic difference in the color of my coffee-stained teeth! I noticed the change in color both in person, as well as in photographs of myself. After 10 days, my teeth were glowing white - not so white that you'd think they were fake, just a nice, healthy white smile!
I have nothing but great things to say about Crest's 3D Whitestrips! The "advanced seal" is amazing - no more goopy strips that feel like they are slipping everywhere in your mouth! These strips are going to be my go-to strips every six months now! These are fantastic!