How to permanently prevent fogging of bathroom mirrors?

One:
Apply soap or detergent on the surface of the mirror. Use soapy water or detergent to spread evenly on the surface of the mirror, and then wipe it clean. Since the soap or detergent contains surfactants, it can effectively prevent water vapor from condensing on the surface of the mirror. , Play the purpose of anti-fog.
two:
Replace the mirror with anti-fog effect
In some treasure, you can buy mirrors with anti-fog function.Custom Bathroom LED Mirrors Factory
The principle of this kind of anti-fog mirror is: paste a layer of heatable film of composite resistance wire behind the mirror. When heating is needed, turn on the heating switch. The heating wire behind the mirror starts to work. The temperature of the glass rises and condenses on the mirror. The water vapor on the surface evaporates, and the mirror becomes bright again!
Three: Paste anti-fog film on the mirror surface. Another way to change the performance of the mirror surface is to paste the anti-fog film. This film is essentially an anti-riot film, which is essentially the same as the film we put on car glass when we buy a car. However, the anti-fog film is made of transparent PET as a raw material to ensure the permeability of the film. Then the surface of the film is specially treated and coated with a scratch-resistant layer and an anti-fog layer. Generally, to achieve the effect of waterproof and anti-fog, there are two methods: one is hydrophobic, and the surface is coated with a hydrophobic layer. When the beads fall on the surface, they will not adhere to the glass, but will slide down quickly. The other is to coat a hydrophilic layer. When water vapor condenses on the surface, it will not form small water beads, but will Spread on the surface to form a uniform water film, which will not affect the sight of the mirror. Since the particles condensed by the water mist are very small, the mirror anti-fog film is more hydrophilic than hydrophobic. At the same time, in order to ensure the flatness of the mirror glass, ordinary float glass is used instead of tempered glass. The PET base material of the anti-fog film has a certain strength, which can prevent the sharp corner glass bulge and glass slag from flying when the mirror is accidentally broken, ensuring your safe use.