I am using CREST its very unambiguous product.I love it.its reduced yellowish color quickly not an week its done in few days.Thank you CREST Team members......TEETH+CREST=WHITENING TEETH+OTHERS(COSTLY)=YELLOw

I used these A LOT when I was younger and it hurt my teeth each time I used them. My dentist ended up telling me to quit using them because they were horrible for my tooth enamel.

These work really well but if used in succession they make your gums so sensitive to the point where eating and drinking can hurt. It is also not the most pleasing taste to put in your mouth. They are highly effective though.

Has a subtle lightening effect. These do not make my teeth sensitive. Affordable and very way to use. I use whenever I feel I need a boost to whiten teeth. Wish the lower teeth strip was a little wider.

I like these a lot and they did their job, but my teeth were super sensitive! Barely able to drink anything cold and it hurt my tongue. I think they are a little expensive for teeth whitening.

It was kind of a pain to use. The strips are unusually big. So I had it all bunched up in my mouth. I'd buy it again but knowing full well it will be a pain. It's pretty pricey too. If it's the only product on the shelf I'll buy it.

These work well for me. I know some products can cause sensitivity. I use the one hour and they work best without irritation. They adhere to teeth well and taste like toothpaste.

These strips certainly do work very well for whitening but cause a bit of sensitivity for me. I will use a toothpaste for sensitive teeth when I'm using these to try and negate discomfort. I usually use these once a year which seems to do the trick.

Great whitening strips. I love using them but have a weird flavor. I feel like my teeth have become whiter a lot sooner than other products that I've used. I would use this product again.

i seen the difference within 3 days and i just think it's amazing i really do love this product and especially how easy it is to use. i think it works wonders.