In their gleaming, modern facility, T. J. Clark employees continue the 75 year-old tradition of bringing their customers naturally effective mineral products*. 
Since T.J. Clark colloidal minerals can be found nowhere else on earth, it is extremely important that they remain all natural. At no time in the process are any additives added to T.J. Clark colloidal minerals. 
No preservatives, artificial coloring, sweeteners, or flavoring of any kind are ever added to any T.J. Clark products.