Nice Choice
Not bad! Considering I didn't wait the 30 minutes before drinking something, it does a good job. It foams ever so slightly and the foam really seems to stick to any discoloration. Slight sensitivity, but just use a sensitive toothpaste. Lot of product in each of the pens. Easy to use. Nice that the pens are clear so you know how much product is left. Haven't used for, but it would be convenient for travel too.
Rating: 5 stars