Densifier/Sealer for Granite and Concrete Polishing, One Quart Free 1-3 days expedited shipping by USPS Shipped as dry powder to be reconstituted by user with purified water Fill in pores, harden, and densify top surface allowing it to be polished to a mirror finish Can also be used to seal grout and other cement-based surfaces Two-part treating and curing for a permanent seal