Off-Gassing: New plastics, vinyl, or rubber release chemicals that stick to the glass.

Smoking in the Car: Smoke particles settle on the glass, leaving a stubborn film.

Poor Air Circulation: Improper airflow can lead to moisture buildup, which contributes to film.

Environmental Residues: External particles enter the cabin and cling to the glass interior.

Incorrect Cleaning Products: Incorrect or leftover cleaners can create a hazy layer over time.