Yes it is pretty expensive. But considering how much $$ it is to get your teeth whitened for free? This product gives you the same, if not better, results as getting it done professionally. In the comfort of your home

I use these to whiten my teeth at home. I do notice a difference as my teeth appear whiter. Are they going to give you professional in office results? No. But not all of have time nor can we afford to go in an office to get our teeth whitened!

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.

They are very efficient and effective. I use them at night. They don't make my teeth sensitive. They work as long as you stick to a schedule when using them.

these did such a good job whitening my teeth in such a short amount of time. did cause sensitivity a little though. i would definitely recommend this product.

This is great for whitening teeth. If used daily you get faster results. Worth every penny and would definitely recommend this to everyone. If you want a whiter smile this is a great suggestion. I would definitely buy this again.

I have been using Crest White Strips since 2001. I started while I was doing orthodonture to correct some teeth alignment issues. I could use the strips because I was doing Invisalign trays. I didn't really think much about it until I saw the before and after photos taken by my dentist. The difference was remarkable! I use them twice a year as directed a few weeks after going to the dentist for a cleaning, and I've never had any problems with teeth sensitivity or anything else. Recently I tried Power Swabs and Crest Smile Actives. First of all, if you put something liquid into your mouth, you are going to slobber! This means that you have to stand over the sink the whole time you are applying it. And if you read the directions, it says do each tooth for 2 minutes. That's about an hour if you do all of your teeth. And I did not find that they whiten as well as the strips. With the strips, I just put them on, and go about whatever I need to do until the 30 minutes is up. I swear by the strips, and with proper use, I think you will too! The more you use them the better the results. But if you are impatient and try to use them too often or for too long, you could experience gum sensitivity. My photo results are two years apart.

I am disappointed with the quality because there is no expiration date included on this product. They package the individual strip packets in a cardboard box and the strips nor the box have the expiration date. I will need to return these for a full refund because they do not work if they are past the expiration date and there is no way of knowing.

Not a 2 pack!! I buy the two pack for gifts for my teens - they used to come in two separate boxes. Not in Received new packaging that puts both sets in one cardboard box with one set of instructions. Not a twin pack. I'll have to figure something out for the gift. Like the product, not exactly happy I wasn't made aware of the packaging issue before my order (website showed old twin pack packaging.

I wish I had read the reviews before purchasing online. I have bought these in store before and they were as the product pictures show. This time I ordered online and they came in a plain brown box and they strips just in there. There are no instructions other than "1. Peel 2. Apply 3. Reveal" - no frequency of use instructions or how long you leave them on.