Concrete & Terrazzo Densifier is a colloidal silica-based concrete hardener and densifier that prevents dusting and increases durability of concrete slab floors. The low surface tension and nano-particle size penetrate the concrete to increase the surface hardness, making it withstand abrasion, chemical resistance and hold a better polish. Concrete & Terrazzo Densifier reacts with the lime in concrete and even bonds to non-Portland cement overlays. The lower product pH benefits customer use and material waste.