Redmond Clay is a pure, bentonite clay (also known as montmorillonite clay) that we mine ourselves, not too far from our salt mine near Redmond, Utah. Deposited many years ago as the ash of now-inactive volcanoes, it's unique in that it contains both calcium and sodium (with twice as much calcium as sodium). It also includes a blend of natural, beneficial trace minerals. We gather it from the earth, crush it into powder, and put it in a jar or bucket without any additives, chemicals, preservatives, or other fillers.