MAGIC is a deep penetrating, siloxane water repellant which provides a virtually invisible below surface seal. This sealer is vapor permeable and does not form a surface film. It internally seals and waterproofs the substrate, which allows moisture to breathe out of the stone, while preventing moisture and dirt from penetrating the surface. Will not alter the appearance of the stone. MAGIC: preserves original beauty of the surface, inhibits efflorescence, penetrates deeply and immediately, and is an excellent grout release. Use when a natural look is desired. For interior or exterior use. Designed for use on Brick, Brick Pavers, Unglazed Ceramic Tile, Clay Tiles, European Clay Pavers, Concrete, Grout Joints, Saltillo Tiles, Travertine, Marble, and any stone surface where no gloss is desired.