I had the 60 minute treatment done about 14-15 months ago. It looked great for a few months, and gradually I can see my teeth starting to yellow again. They are still whiter than pre-treatment though. I asked how long the whiteness would less and the staff were fairly upfront that most people need touchups periodically. I pressed them on how often, and I seem to recall them suggesting every year or two, depending how much coffee, sofa, wine, staining foods you consume. I'm a heavy coffee/soda drinker, so I'm happy the results are still ok, and will probably get a touchup later this year. I just got a promotion advertising $199 for 20 minutes and $249 for 40 minutes to previous customers.
Good for About a Year
I had the 60 minute treatment done about 14-15...
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