Pumice soap

any hard soap charged with a gritty powder, as silica, alumina, powdered pumice, etc., which assists mechanically in the removal of dirt.

See also: Soap

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Ooohlala of Beverly Hills Peppermint Pumice Soap, $9, ooohlalabath.com
Bookbag stash: beat those back-to-school blues by loading up on loot that'll last all fall. Our beauty supplies list beats shopping for pens and paper any day!
A shelf holds a bar of soap (naturally, they recommend Mickey's pumice soap) for cleanups after weeding, mowing, etc., and a shingled roof with the aforesaid mouse reclining across it protects the bar from rain to prevent the soap from melting away.
Gardening time
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