Haze Away is a remarkably effective, water-based grout haze remover. It is effective on both epoxy and cement-based grout haze. Haze Away works quickly to remove haze and residue. Haze Away is excellent for glazed tile, concrete and masonry surfaces, and many natural stones (may dull the surface of some highly polished natural stone). It covers 60-120 sq ft per gallon depending on the number of applications required.