Ideal for renovating your tile joints, this easy to use Grout Restoring Marker renews and restores grout. Simply draw over grout to whiten it. Marker is quick-drying and water-resistant. Reversible nib extends the life of the marker. It is permanent, odorless and non-toxic. Comes packaged in a blister pack. Grout Restoring Marker is an easy-to-use solution for restoring grout lines. Quick drying time. Whitens your grout when cleaning just doesn't do the job. Helps cover stains, discoloration, and mildew on grout surfaces. Ideal for use in bathrooms, kitchens, and other tiled areas.