Hydroxyapatite is a calcium phosphate that actually is already in human teeth and bones. The purest form of this substance is white, and that’s why our teeth, when they are healthy, are white. When it’s lab-made, it is just as effective as the natural mineral in our bodies.
To add to the effectiveness of the mineral, it is the “most stable form of calcium phosphate,” so it won’t decompose through processes like oxidation. This makes it beneficial for various medical issues.