HG cement, mortar & efflorescence remover cleans off stubborn cement film, mortar residues and white salt deposits. This is efflorescence. It is especially suitable for porous and rough textured floors and walls. Dampen the surface beforehand with water. Then apply HG cement, mortar & efflorescence remover diluted with water with a scrubbing brush. Allow a few minutes for the product to work, scrub well and rinse off with water. One litre is enough for a surface area of 15 to 35 m². Use HG porcelain cleaner on floors when cleaning for the first time to remove the very last remains of cement.