KEIM CONCRETAL® LASUR is a thin-layer mineral stain that provides a penetrating, low-pigment, or translucent finish when diluted with CONCRETAL® Dilution or CONCRETAL ® Base or used as an opaque, thin-layer protective coating. This non-film-forming, mineral matte finish will not fill in surface imperfections or change the texture or feel of the concrete, leaving it very natural in appearance.