What is pumice stone?

It is light and very porous stone thrown out of volcanoes. Actually, it is the lava which was charged with steam at great pressure in the depths of the Earth, and expanded by the steam on reaching the surface, in much the same way as dough is ‘raised’ by the gas from baking powder.
Lumps of pumice are useful for smoothing the skin of the hands. Ground into a fine powder, pumice is a very good polishing material.

Additional reading:
Pumice (Wikipedia)

Related post:

Leave a Reply

Your email address will not be published. Required fields are marked *