You can use several products to write on car windows, but the most common and recommended choice is a dry-erase marker (whiteboard marker). These markers use a non-permanent ink that adheres to the smooth glass surface but can be easily wiped off with a dry cloth or paper towel. For a more durable option that can withstand light rain, a window marker or liquid chalk marker is designed specifically for glass and provides brighter, more opaque writing. It typically requires a damp cloth for removal.
It's critical to avoid permanent markers, paint pens, or any product not explicitly designed for glass. These can etch into the window or leave stubborn stains that are difficult to remove, potentially damaging the glass or the defroster lines on the rear window.
| Product Type | Best For | Ease of Removal | Durability | Key Consideration |
|---|
| Dry-Erase Marker | Temporary messages, "For Sale" signs | Very Easy (dry cloth) | Low (smudges easily) | Most accessible and safest option. |
| Liquid Chalk Marker | Decorations, promotions | Easy (damp cloth) | Medium (resists light moisture) | Provides vibrant, opaque lines. |
| Window Paint/Soap | Large lettering, car dealerships | Moderate (soapy water) | High (weather-resistant) | Requires more effort for cleanup. |
| Permanent Marker | Not Recommended | Very Difficult (requires solvents) | Permanent | High risk of damaging the glass. |
| Grease Pencil | Temporary mechanic marks | Moderate (glass cleaner) | Low | Can be greasy and attract dirt. |
For the cleanest removal, always clean the window with a glass cleaner after wiping off the writing to eliminate any ghosting or residue. When writing on the inside of the window, be mindful of the rear defroster lines; applying too much pressure with any marker can damage them. Test your chosen product in a small, inconspicuous corner first to ensure it wipes away cleanly.
