Our Montmorillonite green clay is a calcium bentonite extracted from quarries located in the Massif Central (France) and ONLY undergoes thermal (drying) and mechanical (grinding) treatment. It is not subject to gamma rays or any other chemical process that could deplete it. As a result, our green clay retains all its mineral richness. Multiple books clearly show that among all clays, Montmorillonite is by far the most efficient in many fields. Our Montmorillonite green clay is available in 77 micron surfine in original packaging that is rigid and adapted, recyclable, perfectly hermetic and solid. The so-called superfine granulometry guarantees exemplary purity, ease of use and instant preparation. Powdered clays are raw materials for external use.