Our Montmorillonite green clay is a calcium bentonite extracted from quarries located in the Massif Central (France) and is ONLY subjected to thermal treatment (drying) and mechanical treatment (crushing). 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 wealth. Multiple books clearly demonstrate that among all clays, Montmorillonite is by far the most efficient in many fields. Our Montmorillonite green clay is offered in 77 micron superfine in original rigid and adapted packaging, recyclable, perfectly airtight and solid. The so-called superfine particle size guarantees exemplary purity, ease of use and instant preparation. Powdered clays are raw materials for external use. Recyclable PET airtight jar available on request or in case of breakage of the food cardboard jars.