I've tried out a bunch of different teeth whitening products, and the biggest problem I have is putting them on correctly. I always end up accidentally tearing them or placing them slightly on my gums. And let me tell you, this product was no different - aside from the fact that it was easier to tear than others.
Despite the application difficulties, the results of these whitening strips worked better for me than others have. After using every strip included in the box, my teeth were much whiter than they were before I began using this product, and now, four months later, my teeth are still extremely white.
One other downside of this product is the dissolving factor. The directions say that the strips should dissolve completely within 10 minutes, but when I was using them, the strips could stay in my mouth without being completely dissolved for up to an hour. I don't know about you, but I'd rather have a strip that I can just throw away after use as opposed to a strip that stays stuck to your teeth long after it is supposed to be gone.
If you're looking for a way to whiten your teeth, I would recommend this product. If you're after more of a comfortable product to use to whiten your teeth, you could probably find something better - but if you're after the best results, you should definitely pick these up at the store.