The beauty of Queen Cleopatra is acknowledged worldwide, and it is interesting to note that even she had a clay mask added to her skincare regime. So why not us? Clay has been part of skincare for as long as 80BC and has still managed to remain one of the core ingredients. One particular type of clay, namely pink clay, is a form of Kaolin. Naturally, Kaolin is white in color, but an increasing percentage of iron oxide pink color is added.