What's the best way to clean a foggy bathroom mirror?

The best way to clean a foggy bathroom mirror is to use a combination of heat and a cleaning solution. One method is to turn on the hot water in the shower and allow the bathroom to fill with steam. Once the mirror is fogged up, you can use a clean microfiber cloth or paper towel to wipe away the condensation. Alternatively, you can spray the mirror with a mixture of equal parts vinegar and water or a glass cleaner, then wipe it clean with a cloth or paper towel. This should effectively remove any fog or residue from the mirror, leaving it clean and clear.