Rhassoul clay, found only deep beneath the Atlas Mountains in Morocco, has been used for over 1,400 years as a natural beauty treatment for skin. To first look at this reddish brown cosmetic clay you would not think it was anything spectacular, but looks can be deceiving. This clay is a smectic (or swelling) clay, which means that itís extremely absorbent ñ much more so than other other cosmetic clays. In fact, itís made up of three layers with a water layer sandwiched in between. This clay has a unique ability to absorb tremendous amounts of water, which makes it ideal for cleansing and detoxifying the skin.