Green clay, also known as illite, is an organic material comprised of a host of essential minerals, iron oxides, and decomposed plant material such as kelp and seaweed. Illite was called French green clay for centuries, named after the rock quarries in the south of France that yielded most of the world’s illite deposits.
The absorbent properties of French green clay work . It is used to tighten pores, exfoliate dead skin, and reveal a smoother, fresher complexion. Green clay is known to clear problem skin and heal blemishes, usually in the form of a clay mask. If you have a dry or sensitive skin complexion, you should use a clay mask only once a week, as the clay will absorb moisture from the skin along with any impurities.