Bests & Worsts Reviews from Amazon

I am in my later years and no matter how many whiteners and rinses I used, I could not get rid of the coffee stains on my lower teeth near my gums. The rest of my teeth were white but that part was always stained a dull brown. (coffee) Well this worked! It took the stain away in about two weeks of use. The down side is it is not a replacement for a regular tooth brushing as it claims. Your teeth do not feel clean, so I use a regular toothbrush with toothpaste and then use the whitener unite. Its only 30 seconds folks, so the extra step is not that big of deal. Heads Up! DON'T use regular toothpaste on the plastic mouthpiece, use the foaming toothpaste. You will be cleaning toothpaste out of the mouth piece for weeks. szr/NC