Very Disappointed
I should have paid more attention to the other reviews.  This product did not contain any written instructions.  The strips seemed to be a little dry and contained little whitening power.  I am now using my fifth strip and am hoping after I use them all I will see some results.  Strips I used in the past made my gums and teeth very sensitive for a couple of days and I assumed that was because they were working.  These strips don't have that effect or very little effect.  I am very disappointed in this product and will not buy them again.
Rating: 1 stars