Dense Stone Impregnating Sealer is an impregnating, invisible and breathable sealer that protects natural stone countertops from damage caused by water, salts and oil-based stains. Treated countertop surfaces are easier to clean and maintain, and will help to preserve the stone’s natural beauty. Dense Stone Impregnating Sealer provides lasting protection for natural stone that comes with a 25 year Performance Warranty*. ****A 25-YEAR PERFORMANCE WARRANTY is offered when product is applied by an Accredited Applicator following our written instructions and surface is maintained regularly using our written maintenance system, as outlined in our warranty document. Visit their website at www.stain-proof.com to find your nearest accredited applicator, or reach out to become and accreddited applicator. Package Size: 16 fl OZ/.47L. Contents: Ethanol, silane, fluoropolymer. COVERAGE for polished granite: 120 SF per 12 m^2/L*