Well, I have used Glister toothpaste for 3 months and so far it is the best stuff I have ever had! And it’s not even more expensive than other brands, simply because it’s concentrated as well as most of Amway products. Recommended dose is 1/2 to 1/3 of regular dose of other toothpastes, just on the tip of your brush. Actually, in my family we are 3 people and one tube lasted little longer than 2 months (we use to brush teeth twice a day each) I’m nonsmoker but I have a friend who smokes quite a lot and he did removed nicotine stains from his teeth after less than 1 week of using Glister. The other good thing is that it doesn’t change the taste of food if you eat after you brush your teeth (however, it’s still better if you do it after you have eaten :-), but it happens sometimes... The only little disadvantage is that you can’t buy it in the store and you have to find Amway dealer. But than you will find many more products to satisfy your needs.