Lithofin KF Grout Protector - 500ML Brooms Accessories will etch the surface by

will etch the surface by creating a chemical reaction with the calcium carbonate present in marble

or some other type of acid repellent tile

maintaining the original appearance of treated surfaces without adding a glossy or wet look

but it can get tricky especially when the first initial clean was never undertaken to remove grout haze

Lithofin KF Grout Protector - 500ML Brooms Accessories will etch the surface byLithofin KF Grout Protector 500ML Ceramic Tiles Invisible Grout Penetrating Sealant Lithofin KF Grout Protector 500ML penetrates well into the porosity of the grout surfaces. Once dry, it protects grout against greasy dirt and spots in kitchen splash backs, bathrooms, showers, toilets and makes maintenance easier. Also, this product is an excellent product that allows you to prolong the lifespan of your grout, which turns protects your tiled surfaces