If you’re decorating glass, look for water‑based liquid chalk or water‑based window paint markers labeled for non‑porous surfaces.

• Easy cleanup: Many liquid chalk options are wet‑erase on glass and remove with a damp cloth or standard glass cleaner.
• Visibility: Neon and bright colors pop on windshields and side windows, especially in daylight.
• Tip styles: Fine (2–3 mm) for details, and jumbo (10–15 mm) for bold headlines. Reversible tips give you more line options.
• Surface check: Use on clean, dry glass. Avoid painted panels and porous trims.
• Driving safety: Keep writing outside the driver’s line of sight and wiper sweep area.

Always read the product label for surface compatibility and removal guidance.

Different marker types suit different car surfaces and needs. Here’s a quick guide:

• Liquid chalk/window markers: Water‑based, designed for glass. Typically washable on non‑porous windows and mirrors.
• Water‑based paint markers: Often used for dealership or retail window messages; can offer brighter, longer‑lasting lines than chalk on glass.
• Oil‑based paint pens: Common for tires, metal, and other rugged surfaces where permanence and water resistance are preferred.
• Acrylic paint markers: Versatile for crafts and multi‑surface projects; durability varies by surface.
• Solid paint sticks: Bold, weather‑tough marks for outdoor display and inventory use.

Select by surface (glass vs. rubber/metal), removability (temporary vs. permanent), and tip size for readability.

You can often identify the marker type by how it looks and reacts to moisture.

• On glass: Chalky, powder‑like writing in neon shades is likely water‑based liquid chalk. Try a damp cloth on a small corner; if it smears, it’s likely wet‑erase.
• On tires/trim: Opaque, glossy lines that don’t smudge with water may be oil‑based paint.
• Location matters: Messages on windows are usually temporary; marks on rubber or metal are often intended to be long‑lasting.

For removal, start with mild soap and water or a standard glass cleaner on windows, and a soapy brush for tires. Avoid harsh solvents on painted surfaces. Results can vary, so test a small area first and follow product‑specific instructions when available.

It depends on the formula, dry time, and weather intensity.

• Water‑based liquid chalk: Once dry on glass, it may tolerate light moisture but can streak or fade in heavy rain or with wipers.
• Water‑based paint markers: Generally more rain‑resistant than chalk on windows, but still removable with proper cleaners.
• Oil‑based paint pens: Typically waterproof on tires and metal and not intended to wash off easily.
• For better staying power: Clean the glass first, apply thin layers, allow full dry time, and avoid touching or wiping.

Exposure, humidity, and application thickness all play a role, so durability can vary.

Choose your tip based on how far the message needs to be read and the level of detail.

• 10–15 mm (jumbo): Great for big, bold headlines that are easy to read from a distance on windshields or storefront windows.
• 4–7 mm (chisel/3‑in‑1): Versatile for medium headers and subheads; flip the nib to switch between broad strokes and finer lines.
• 2–3 mm (fine): Best for details, outlines, and pricing or small notes.

Bright or neon colors improve visibility. If you’re mixing styles, pair a jumbo marker for the main line with a fine tip for accents. Always test on a corner of clean glass to preview line width and opacity.