White Kaolin Clay

 
This clay has been washed by tremendous amounts of rain and is nearly devoid of minerals. It is very benign and makes a great base for body powders. It is astringent and drying.

Why is clay effective against microbes? It's chemical. Work done by ASU and Western Carolina University students and chemists show that the negatively charged surfaces of clay attract multivalent ions, particularly metals. In turn, water is absorbed between layers of the crystal structure.
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