I decided to give KOR a try due to their claim of being less painful than others. I had ZOOM about 4 years ago, and remember getting those zingers. KOR involved at home bleaching along with in office whitening. WORST PAIN ever. Like electric was passing through my teeth. Only whitened a few shades, definitely not worth pain or $.
KOR Teeth Whitening - Tampa, FL
I decided to give KOR a try due to their claim of...
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