I have only used 6 of these so far and already my teeth are insanely more white!! I found that after only 2 uses my teeth were noticably whiter and had people commenting on them after the 3rd but also after the 3rd use I started getting sharp pains in my teeth usually around 10/15 minutes after I had taken the strips off. I had to stop using the strips for a few days and go back to them. I found that leaving a few days in between each use helped a little but the pain still occurs after every use. I also found that brushing my teeth straight after using the product can help to reduce the severity of the pain. Other than that I would definetly recommend this product to anyone who has yellow stained teeth as it's worked wonders on my own!

I just want to say that this product is really amazing. I am 46 years young but my smile was definitely showing my age. I was getting very self aware that my smile wasn't what it was in my youth. Years of red wine and coffee had definitely affected my teeth in the worst way. The strips were easy to apply. Wait 30 minutes! It takes a little extra oomph to get them off. And then lightly brush and go. Within 3 days, my smile looks amazing. 17 more to go and it can only get better!

These strips are definitely effective, especially when used with the UV light. however, they are NOT ideal for people with sensitive teeth. Even if I only leave the strips on for ~30 minutes (rather than the suggested 60mins), my teeth are SOOO sore and sensitive for at least a day or so. Great whitening results though!

these are my GO TO teeth whitening strips. i've used other brands before and a nova shine but these give you instant lasting results without irritating your teeth if you have sensitive teeth like i do! they are a bit pricey but worth every penny Crest 3D White Luxe Professional Effects Whitestrips Teeth Whitening Kit

This is the best teeth whitening kit out there! I feel as if it whitens my teeth almost as much as a professional. I always get compliments on how white my teeth are after using them. This is the only thing I have found that whitens my teeth to this extent! Just be careful, as they can make your teeth sensitive if used frequently. 

I've used this for forever. It keeps my smile nice and bright. It does cause sensitivity but that's with all whiteners. It's super affordable and you don't actually need to use the whole kit to get results. I usually just do one strip a week to help with the sensitivity.

These make my teeth super white!! I used them for 30 minutes each day until I ran out and I really like it!! The only thing I don't like is that it makes my teeth a little sensitive for a few minutes after I take the strips off but that does not last long. I would buy again!

I have fairly white teeth to start with. However, I am a teeth person and like for mine to be as white as humanly possible. For a little extra pop, I use these white strips for a few days. They work great and fast with little tooth sensitivity! Love!

I recently had a root canal, which resulted in a crown. My dentist asked if I bleach my teeth? I explained I only whiten with Crest WS. He said my teeth were so white, he had to submit a special order to whiten my crown even more in order to match. He was very surprised that I've never had my teeth "professionally" bleached... THANKS CREST WS!

I use the whitestrips once every year. I feel like they make a difference and I have received sone comments on my teeth. You have yo prep your teeth before use by using sensitive toothpaste and then keep using it during the whitening. Your teeth will hurt some from the strips bit the toothpaste helps.