These are the bomb. I definitely see a difference when I use them. The only reason I deducted a star is because the edges of the bottom strip come up on the sides when using them.

Altho it leaves your teeth sensitive for a day, this thing works great! Why spend lots of money going to the dentist when you can do it safely at home?

I try to use these as much as possible! These work so amazingly and I definitely recommend!! I saw results after just the first time and I still continue to see more!

I love crest white strips. they work, periodt. Seriously, when I use two of these bad boys in one week (space them out or your teeth will hurt) people comment on how white my teeth are constantly. I love using them before important events

I definitely saw a change in my teeth after using this product for only two weeks straight. I used it every night, and I'm very satisfied with the results and how it made my teeter whiter. Would definitely recommend!

I love these white strips and they definitely work, but the strips don't stay in place easily. They slide around so you have to keep adjusting them. But I think they're well worth it.

When I want to keep my teeth white I use the whitening strips one time a week usually on Fridays. I keep them on from 30 minutes to an hour depending on the package. But there is always a result of white Teeth when the process is done

These are great. Very powerful whitening. They do not slide off your teeth. Seem to bond to your teeth until you remove and with regular use they make a noticeable difference. They are a little pricey so i usually only purchase about every 6 months.

I love this product, I definitely recommend to anyone who is trying to make their teeth whiter. I even gave it to my sister to try and she loves it just as much! I could see a difference after just one use!

After consistent use, you will definitely tell a difference! A single use won't get you the results you're looking for though. I use these for 1-2 weeks about once a month or every other to keep my smile white enough.