Just started using the pen and I see a slight improvement so far. The only problem is the pen dispenser doesn't seem to work very well, I have a hard time getting the gel to come out of the tube!
If you drink coffee daily (like me) you know the struggle of keeping a white smile. I have tried countless of whitening products but I think this one has worked the best. I will continue to buy.
So happy to have finally found a teeth whitener that is vegan. It's easy to use and seems to be working. Will buy again.
Works great.i have celiac disease no issue.. But the knob broke when I was twisting to get it out.
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