White Waterproof Tile Marker Grout Pen Description: Revitalize your home with the Ceramic Tile Marker Repair Pen. This innovative tool is designed to instantly color and cover stained, dirty, or old grout, making all your bathroom, kitchen surfaces, tile floors, countertops, and walls look brand new. The Ceramic Tile Marker not only restores grout to its original color but also allows you to change the color of your grout, effectively covering up even the most stubborn stains. It's an easy and efficient way to give your home a fresh, clean appearance, just like the day it was built. Highlights: Instant Transformation: Quickly covers stained, dirty, or old grout.