Doing the job
As my dentist says, I am a green tea and blueberries kind of girl.  I purchased this pen to help remove stains between my teeth (that make it look like I have something stuck between my teeth).  I have been using it for 2 weeks and have noticed a difference.  I have sensitive teeth and have been using it locally in a few spots, not all over, and haven't noticed much increased sensitivity.  I can't complain!
Rating: 4 stars