Shower Sealer is a clear solvent based treatment specially designed to seal the grout and cement on the inside of a shower. This prevents moisture traveling into the wall and causing damp wall problems. Shower Sealer prevents the grout from collecting dirt and mildew, resulting in a more hygienic environment. Shower Sealer will not damage the tiles or result in any colour change to the grout, tile and cement. Shower Sealer is safe to use on all types of tiles. One container is generally enough to seal a standard size shower. Simply aim and spray into the grout lines and wipe off any excess with a dry cloth