ClearShield is an odorless water-based sealer formulated to penetrate the surface of concrete, brick, mortar, tile, stucco and other masonry surfaces. It forms a water repellent shield for long-lasting wear. It can be used on vertical and horizontal above-grade surfaces, interior and exterior. ClearShield protects concrete driveways and walks against adverse effects of deicing salts, water, ice and weathering damage. It will not discolor concrete. White in container but dries clear on surface.