The best way to clean car interior windows is to use a two-step process: first, spray an ammonia-free glass cleaner onto a microfiber towel (not directly on the glass to avoid overspray on the dash), and second, wipe in a vertical motion on the inside and a horizontal motion on the outside. This technique helps you instantly identify which side any new streaks are on. The key is using the right tools—a plush, clean microfiber towel and a proper auto glass cleaner—to eliminate the filmy residue that causes hazing and glare.
Using a circular motion or paper towels is a common mistake that leads to streaks. The interior glass develops a film from off-gassing plastics, dust, and smoke, which requires a different approach than the exterior. After applying the cleaner to the towel, wipe one section at a time. Immediately follow with a dry, clean section of a second microfiber towel to buff away any remaining moisture and reveal a crystal-clear, streak-free finish. Work in a systematic pattern, such as top-to-bottom, to avoid missing spots. For stubborn grime around buttons and vents, use a soft-bristled detailing brush to agitate the cleaner before wiping.
| Common Mistake | Why It Causes Problems | Correct Alternative |
|---|
| Using ammonia-based cleaner | Can damage window tint and interior plastics | Use an ammonia-free auto glass cleaner |
| Spraying cleaner directly on glass | Overspray damages dashboard and electronics | Spray cleaner onto the microfiber towel |
| Wiping with paper towels | Leaves lint and causes streaks | Use a high-pile, clean microfiber towel |
| Wiping in circles | Creates swirl marks and streaks | Wipe in straight, overlapping lines |
| Using a single dirty towel | Spreads grime instead of removing it | Use multiple clean towels, folding often |
