￼￼The use of clays and earths for cleansing, decorating, and healing the skin has a history almost as old as Mankind. Archaeological evidence reveals that by 6000BC the peoples of Mesopotamia were using clay on their skin for medicinal purposes. When used in skincare, facial masks formulated with clay, perform important cleansing, exfoliating and toning functions.
The clay used in Yin Yang Kaolin Face Mask is mined in Cornwall. China clay as it is otherwise known, is formed by decomposition of feldspar minerals in granite to form the white clay mineral kaolinite. This process is known as kaolinisation, a process whereby feldspar is weathered by hydrothermal activity to produce kaolinite. The kaolinisation process was probably accentuated by weathering during periods of warmer climate 50-60 million years ago. The china clay deposits in Cornwall are the largest in the world and have been worked since 1746. But the first use of Kaolin or China clay was over one thousand years ago in China for the purposes of making a pure white type of porcelain.