Question

name of the rock used as the body scrubber

Answer 1

Thanks for asking the question.
Well Pumice rocks are the rocks used as a body scrubber.
They are very light and porous and are formed when a froth of glassy lava solidifies. 
They are also used to make lightweight concrete cinder blocks. They also shows the factor of permeability because they are very porous. It has so much space in the tiny bubbles that it can easily float in water
Hope it helps.