Although fluorspar ore is found worldwide, it is not produced in the United States. China is the world's largest producer of fluorspar ore. Other active ingredients incorporated into toothpaste loosen plaque and prevent its buildup. Additional chemical additives are incorporated in some toothpaste to promote healthy gums. The answer is a humectant.
Humectants are a major element in all toothpastes.
They help to retain moisture and make toothpaste creamy and squeezable. Glycerin and sorbitol are two common humectants. Glycerin, also called glycerol, is a by-product of soap manufacturing. Sorbitol is found in some berries and fruits. Both are alcohols that may be synthetically produced, mix with water, are odorless, and sweet tasting.