Fuller's Earth is a clay mined from the earth's crust that typically contains a
complex of minerals, including quartz, silica, iron, calcite and dolomite.
At one time, this material was used in apothecaries in compounding pills. Because
this material is highly absorbent, it is used to spot "dry clean" fabrics and is
an ingredient in dry shampoos. Fuller's earth is also combined with other
botanicals to make herbal body powders and facial masks.