Review (5/5): solid product, a good deal and it works!
This Glu whitening device works! I just completed one application (= 4 consecutive applications of 8 mins/day for 5 consecutive days). I found the gel easy to apply and there was extra gel in each vial. There was no sensitivity to my teeth or bad taste. My teeth look whiter after the 5 days and simply look and feel cleaner. This device is much easier than white strips or bite trays and can be done at home for about 1/4 of the cost that my dentist charges with the same results. Overall this is a solid product, a good deal and it works!