I looked high and low for a Hydroxyapatite toothpaste that did NOT contain glycerin, this is one of the very few (if not the only one) that is glycerin free, if you are wondering why, glycerin coats your teeth and can prevent re-mineralization which would defeat the purpose of this particular toothpaste. I am on my second tube, I wanted to use it for a while to make sure it worked, and it does. The toothpaste is a bit on the thinner side (compared to other toothpastes), which is fine, it does not affect it at all, it works fine, just be aware that when you squeeze some out, it will come out faster than you expect and might even run down the side of the toothbrush, I am frugal with it, I don't squeeze out a bunch of it so it's not a problem. I also "shake" the tube a bit before I open it, since it's thinner, I want to make sure all the ingredients are equally mixed in the tube before I squeeze it out, I don't know for a fact that it does or does not separate, it's just something I do for my own peace of mind. I brush my teeth with this toothpaste and spit it out but I don't rinse, I allow the residual toothpaste to remain in my mouth and on my teeth to get the most benefit from it. I noticed that within a few days, my teeth were less sensitive, I don't have a major problem with sensitivity but I did notice the difference. I feel like this gets my teeth and mouth very clean. I like the ingredients, the flavor is not like other toothpaste, it has more natural ingredients so it doesn't have that blasting, knock your head off mint flavor like so many other toothpastes have, this is more subtle, pleasant. I also noticed that my bottom teeth seem tighter, if I use a different toothpaste for a few days, I feel like my bottom front teeth move a little, not major movement, but it's there. When I use this toothpaste regularly, daily, it makes my teeth feel more tight. Bottom line, I will continue using this.
