My teeth were only two shades whiter after spending almost 2 hours in the dental office and two days after, they seemed to be back to the same grey tone they were before I had the Zoom Whitening done.
I experienced shooting pain in my teeth for two days afteward and after a week, I still had a lot of sensativity, but no whiter teeth! The worst thing about was waking up the next morning with blisters all over my lips, inside and out. Not a pleasant experience and so totally NOT worth it.
I did it because my dentist told me that it would take away the coffee and tobacco stains that I have had for 30 years. It did NOT! I still have stains between my teeth that were even more noticable after the rest of the surface area of my teeth were a bit brighter.
What a total waste of money and time.