Repellents like STONESHIELD MARBLE, GRANITE & TRAVERTINE SEALER and STONESHIELD PENETRATING SEALER are silicone type products which do not form a “skin” or surface layer. They are designed to penetrate the stone and protect from within by repelling the stains. Their primary function is stain resistance and therefore they cannot stop wear and tear and surface damage. STONESHIELD MARBLE CRYSTALISER and STONESHIELD PROTECT & SHINE and STONESHIELD SURFACE PROTECTOR can be used to protect the surface from surface wear.