For the shower mirror to work and remain fogless, the mirror should be warmer than or as warm as the shower room. This can be done using the hot shower water itself, either by filling up the water chamber at the back of the mirror or via a pipe attached to the mirror and the showerhead.
Another way to keep the shower mirror fog-free is by using an anti-fog surface treatment like anti-fog sprays. Compared to the warm water method, it does not last as long, so it is recommended to re-apply as needed.
It is best to install the shower mirror in a spot where it will not come in contact with direct streams of water. You can choose a fogless shower mirror with anti-fog treatment or one with a built-in hot water reservoir, or get both with Mirrorvana's dual anti-fog shower mirrors.
You can check out our Shower Mirror Collection on Amazon here, or browse it on our website.