The defogging function of LED mirror is a useful feature that prevents the mirror's surface from fogging up after a hot shower or when the bathroom has high humidity. This feature ensures that you can have a clear reflection on the mirror even in steamy conditions.

The defogging function typically works through a built-in demister pad or a heating element located behind the mirror's reflective surface. When you turn on the defogging function, the demister pad or heating element warms up, gently raising the temperature of the mirror's surface. This process helps to eliminate the temperature difference between the mirror and the surrounding air, preventing condensation from forming.

Condensation occurs when warm, moist air comes into contact with a cooler surface, like a regular mirror. The moisture in the air condenses into tiny water droplets on the mirror's surface, creating fog that obstructs your reflection. However, with the defogging function, the mirror stays at a temperature above the dew point, so the moisture in the air does not condense on its surface.

The defogging function in LED mirrors is usually activated with a separate switch or a button on the mirror's control panel. Some advanced LED mirrors may have an automatic defogging feature that turns on when the mirror detects a significant change in humidity, ensuring that the mirror remains clear without the need for manual activation.

This feature is particularly beneficial in bathrooms with poor ventilation or during colder months when the temperature difference between the bathroom air and the mirror surface is more significant. It ensures that you can use the mirror immediately after a shower or in humid conditions without waiting for the fog to dissipate naturally.