A process for producing a product having anti-fog coating, as well as process according manufacturable product

In order to prevent fogging of a substrate, the invention provides a method for producing a substrate with a coating which reduces fogging. The method comprises the steps of: - manufacturing or providing a singulated substrate, - sweeping over at least a portion of the surface of the substrate with a flame, and - depositing a silicon oxide layer on at least a portion of the surface of the substrate having at the surface OH groups by hydrolysis of a silicon compound in a flame, while the flame passes over the area of ​​the substrate.