Aqua Mix Sameday Grout Sealer is a specially formulated aerosol sealer that allows you to seal grout without the need to wait until the grout has cured. This Sameday Grout Sealer can be applied as soon as two hours after grouting. Aqua Mix Sameday Grout Sealer is an aerosol spray for easy application. Simply shake the can, point the nozzle toward the surface, and depress the nozzle along the grout joints. The aerosol spray will seal the grout and any sealer that gets on the surrounding tile will simply evaporate without the need to wipe clean. Please Note: Recommended for sanded and unsanded porous grout joints for ceramic tile installations. May slightly lighten or darken some surfaces. Will not prevent surface wear or etching from acids or caustic chemicals.