Must use consistently for several days in a row to see a difference. Then your teeth might be sensitive to over doing it. Fine line.

My teeth are really white bc of these. Like cmon look my teeths are so pretty: :) I love this product

Loved this product! I used it sparingly since I do have sensitive teeth but had no trouble with it!! Noticed a difference in a few days!

It's pretty good. It truly does what it was designed to do, however, it made my teeth really sensitive so i had to stop using it for a little while.

THEY WORK!!!!! Very easy to use. You will see visible results after a couple uses. But consistency is key.

Makes your teeth so white. I had coffee stains on my teeth and it completely got rid of them. They grip on to your teeth better than other brands.

I have never seen anything whiten my teeth more than these strips. If you need something quick to whiten your teeth go buy a few of these.

They are hard to stay on your teeth with all your saliva and I'm not sure if it's just me, but my teeth don't seem to get whiter after I use these

my absolute favorite teeth whitening product. can't wait to be 100% finished with invisalign so i can get back to whitening these babies. !!!

Love these and notice results super quickly but it makes my teeth so sensitive after using a few times!