Concrete Surface Hardener and Dust Proofer is an aqueous solution of sodium silicate modified with wetting agents and other additives. The Surface Hardener and Dust Proofer can be used over new fresh or cured concrete and can be used over old concrete cleaned floors. The Surface Hardener and Dust Proofer improves the abrasion resistance of concrete floors and seals the surface against the penetration of oils, chemicals and chlorides. The Concrete Surface Hardener and Dust Proofer leaves no residue, dries in few hours time and can be applied in one or several coats application.