HATE! They did their job of course BUT I fell asleep with mine on and I was in more pain than I'd been in my entire life! They're obviously TOO strong.

This product does work but made my teeth extremely sensitive while using. While using them for the time directed I was getting sharp pains in my teeth that lasted even after removing the strips. I stopped using this product due to sensitivity.

These really helped me with some teeth stains I had issues with. Now I only use a pack once a month to continue to maintain the whiteness it helped me get to. It can be a little expensive but there are usually coupons and sales

I liked it, it was a little strong on my gums, but got the job done. I am a Dental Hygienist, and I prefer the crest to in office whitening. I think it's gentler and just as effective

I honestly dread wearing them since I hate how it feels in my mouth, but it works so well! I wore this leading up to my wedding and it brightened my teeth so much, making the discomfort of wearing them worth it.

This product does definitely whiten my teeth. The only downside of any whitening product though is the sensitivity. Be prepared for that but I think the pain is worth the pearly whites.

Works well! Have to use it for a few days or up to a week! Can make your teeth very sensitive to cold items but worth it! White teeth makes for a happier smile!

Great product, I don't use that often. Easy to use, and I put on at the end of the night for a few minutes. After a few uses, you start to see actual results.

Wow! This product began taking the stains and discoloration away almost over night! I have been using these strips for almost 2 years periodically and never have been disappointed!

i got these one time because i was noticing my teeth weren't as white as i wanted them so i bought these and they were so amazing my teeth are still that same white color! that is why i haven't purchased it again because i didn't need to!