EnrichnSeal is a no-sheen penetrating sealer formulated to darken, enrich and highlight the character and beauty of unsealed, natural stone. It rejuvenates the color and improves the appearance of worn and weathered stone. May also be used as a pre-grouting sealer over clean stone surfaces a minimum of 2 hours prior to grouting. Allows moisture-vapor transmission. It also effectively darkens the color of grout joints. Uses: Recommended for use on unsealed, natural stone such as marble, granite, slate, limestone, flagstone, quartzite and sandstone. Expected Wear: Will vary depending on hardness and texture of surface, type of area, surface wear, frequency and type of maintenance products used. Expected wear is up to 15 years. Exterior applications may require more frequent re-applications. Weather conditions, harsh cleaning methods and high-alkaline, acidic or solvent-based cleaners will affect wear.