AOOSU Tile Grout Marker, 6-Piece Dark Grey Set with Replacement Tip

For anyone looking to refresh dark grey tile joints, these AOOSU grout markers offer a straightforward way to apply colour along the grout line. The pen format gives you a focused application for small touch-ups and longer runs alike. A quick-drying, water-resistant formula makes them practical for tiled areas used every day.

Technical overview

• Type: Tile grout marker pen
• Colour: Dark grey
• Material: Plastic and fibre
• Compatible material: Ceramic
• Pack: 6 grout markers
• Included component: Replacement tip

The pen-style format is designed for applying the colour directly along tile joints, helping tidy the appearance of grout without spreading the product across the surrounding surface. Interchangeable round and square tips offer different ways to guide the application. The dark grey shade is suited to refreshing grout in a matching colour, while the water-resistant formula is intended for use in damp areas such as bathrooms and kitchens.

Requirements

Shake a marker several times before use, then press the tip until the colour begins to flow. Apply it along the grout joints and allow it to dry fully before the area gets wet. Close the cap after use to help prevent the ink from drying out. For routine cleaning, the formula is described as able to withstand daily cleaning, avoid aggressive tile cleaners to help extend the refreshed finish.

Best use cases

Use the markers to touch up discoloured-looking joints on ceramic tiled floors and walls. They are suitable for everyday refreshes in bathrooms, showers and kitchens, as well as other listed areas such as patios. The pen format is particularly useful when you want to work along individual grout lines rather than apply a broader coating over the tiles. For example, after cleaning a shower area, you can trace the marker along the joints and let the colour dry fully before using water.

Compared with taking on a larger grout repair, a marker offers a more targeted approach to improving the visible colour of existing joints. It is intended for restoring the appearance of grout, rather than replacing the grout between tiles. The six-marker pack gives you multiple pens for working through tiled areas or keeping a marker available for future touch-ups.

Questions before you buy

How do I use a grout marker? Shake it several times, press the tip until the colour flows, and apply along the joints. Let the area dry completely before it gets wet, and replace the cap after use.

Where can I use the markers? They are intended for ceramic tile joints on floors and walls, including areas such as bathrooms, showers, kitchens and patios.

Can the refreshed joints be cleaned? The formula is described as water-resistant and suitable for daily cleaning. Avoid aggressive tile cleaners to help maintain the finish.

When it makes sense

Choose this dark grey set when the aim is to refresh the look of existing ceramic tile joints with a direct, pen-based application. Its quick-drying formula, water resistance and interchangeable tip options make it a practical fit for focused grout touch-ups around the home.