I purchased Crest pro-health whitening rinse it has improved the appearance of my teeth and gums I was in search of a whitening rinse or mouthwash to help rid my teeth of smoker's stains this product work I purchase two 32 ounce bottles from my local pharmacy. It freshens the breath without wanting to gagged on the taste it minty and it has different flavors. I recommend it even to nonsmokers if ask my opinion.