I had it done a couple of months ago. My teeth were pretty white to begin with, only a couple of shades from the whitest on the chart.
They did get off the charts white afterward.
I do drink alot of coffee and I agree that they will not stay white as long if you drink dark drinks.
I would recommend getting the bleaching trays to use afterward. I did not do that and I wish I did. I think its like a $100 more or something like that.
Overall, I was/am happy with the results and would recommend it
