Rainbow Chalk Markers Grout Pen Factory Colors Tile Repair Paint Marker Fugen Marker For Grout Pen Dark Grey - Ideal To Restore The Look Of Tile Grout Lines Grout Pen Black Restores Tile Grout and leaves them looking clean and protected Tips are designed to be removable so when a tip becomes worn or damaged it can be taken out and flipped over. If the tip falls out do not worry, simply put it back in and keep working Change Colour of your Tile Grout Lines Grout Pen White, 4pcs Waterproof Grouting Pens, Tile Grout Reviver Pen Grout Restorer Marker Pens for Restore Wall Floor Tile Ideal for floors & walls in Kitchens and Bathrooms Anti-bacterial agents help prevent mould from re-appearing SIMPLE SOLUTION: Skip scrubbing tiles and use a grout pen to clean, whiten, and recolor your grout; USE ANYWHERE Do I need to press down hard while moving the pen along the grout lines? Pressing hard will damage the tip. Once the tip is fully saturated, lightly move the pen across the grout line. It's better to prime the pen by pressing up and down until the ink flows to the tip.