How is the glass oil film formed?

[VonCooper]

Glass oil film is formed due to the exposure of glass to oil stains and dust in the air, and the lack of thorough cleaning and accumulation over a long period. The following is a related introduction on how to clean glass oil film: 1. Ordinary soap water scrubbing: First, use household soap water to scrub the windshield once to remove the real oil film layer on the glass surface, and also to wash away the ordinary dust layer, which is beneficial for further scrubbing. 2. Adding acetic acid for scrubbing: Generally, after washing with hot water, it can be cleaned quite well. If there are still some residues, it is recommended to use acetic acid added to water to soak the glass surface before cleaning. This indicates the presence of a third layer of chemical bond adsorption layer, usually some calcium-containing ash deposits or connections on the glass surface layer.