PROSOCO Sure Klean Limestone and Masonry Afterwash

A mild organic acid cleaning compound, it neutralizes and brightens surfaces that have been prewashed with Sure Klean® 766 Limestone & Masonry Prewash. When used properly, this two-part cleaning system removes heavy carbon, dirt and other atmospheric stains from porous limestone, concrete and most other porous masonry surfaces.  766 Limestone & Masonry Prewash and Limestone & Masonry Afterwash will not damage most masonry surfaces.