Aqua Mix Penetrating Sealer is a no-sheen, natural-look penetrating sealer designed to protect against stains. Aqua Mix Penetrating Sealer is recommended for dense, smooth, or polished surfaces, including: natural stone such as granite, limestone, marble, slate and travertine, porcelain, quarry, saltillo, terra cotta, cement pavers, masonry surfaces, and other porous tile and grout where a natural look is desired.