Industra-Seal 117 pLS is a one component professional strength water-based lithium-silicate solution designed to densify cement and concrete substrates. The lithium-silicate densifier reacts with the cementicious ingredients to densify while allowing deep penetration to chemically harden and fortify the substrate. After the chemical reaction occurs, the substrate will be more abrasion resistant and help protect the surface from wear, moisture, and efflorescence, while remaining breathable.