By the medieval period fuller's earth had been introduced for use in the process.
From the en.wikipedia.org
It dusted off the disputed sculpture, cleansed it with a mudpack of fuller's earth, and put it on public display once again.
From the time.com
Clay-based masks use kaolin clay or fuller's earth to transport essential oils and chemicals to the skin, and are typically left on until completely dry.
From the en.wikipedia.org
The team also quickly mastered the art of creating extremely convincing miniature explosions using materials including petroleum and fuller's earth.
From the en.wikipedia.org
His dad owned a company that made industrial cleanup materials, and when someone asked him to suggest something for a cat box, he filled up a bag of fuller's earth, a kind of absorbent clay.