How to Keep Bathroom Mirror from Fogging Up

Prevent fogging for clear reflection and easier grooming maintenance.


Does your bathroom mirror fog up after you shower? Are you tired of wiping the mist away every time? Then our tips are for you. You must follow various tricks, including DIY hacks, to get a clean, fog-free mirror. So follow our directions below without delay.

Table of Contents


1. Use Anti-Fog Solutions

A commercial anti-fog spray is the most accessible and effective way to prevent fogging. This spray creates an invisible coating on the mirror surface that prevents fogging and keeps the mirror clean. Follow the instructions on the packaging for the best results.

2. Shaving Cream or Baby Shampoo

If you’re on a budget, you can use shaving cream or baby shampoo to prevent fogging and get clean mirrors on a budget. First, spread a small amount of shaving cream or baby shampoo on the mirror’s surface. Then wipe with a dry, clean cloth. This method prevents fogging and is cost-effective.

3. Vinegar and Water Mixture

You can make anti-fog spray with ingredients you have around the house. Make a spray with vinegar and water. Mix equal parts vinegar and water and pour into a spray bottle. Then, spray the mixture generously on the mirror’s surface and wipe it off with a clean, dry cotton cloth or towel.

4. Rubbing Alcohol

Rubbing alcohol can also prevent fogging in your home. Mix one part of rubbing alcohol with one piece of water in a spray bottle. Then, spray the mixture generously on the mirror’s surface and wipe it off with a clean cotton cloth.

5. Ventilation

Mirror fogging is caused by excessive humidity in the bathroom. So, use overhead windows and exhaust fans to prevent humidity in the bathroom. If your bathroom does not have a fan, consider installing a fan. Windows can provide natural light and ventilation and reduce humidity.

6. Adjust Room Temperature

A comfortable, low temperature inside the bathroom reduces the possibility of mirror fogging. Because the mirror’s surface is cold, fog accumulates when the bathroom temperature rises. Use a ventilator to keep the bathroom cool, but remember to keep it cool so it doesn’t get too cold.

7. Rain-X or Similar Products

You can use Rain-X or a similar product to prevent bathroom mirrors from fogging. Apply a small amount of Rain-X to the mirror’s surface and leave it for a while. Then wipe well with a dry, clean cloth. Rain-X is very effective at reducing mist and removing flammable vapors.

8. Preheating the Mirror

Preheat the mirror with a hair dryer or damp cloth before showering for a short-term solution. This will increase the mirror’s temperature and reduce condensation.

Why Bathroom Mirrors Steam Up

Bathroom mirrors fog up for various reasons, and many people need to learn why this happens. So, below are three causes of condensation.

Hot Shower or Bath

One cause of fogging on the bathroom mirror is bathing in hot water, which increases the humidity in the air. As a result, warm air turns into cold vapor and turns into dew on the mirror.

Cool Mirror Surface

Usually, room and bathroom temperatures are different. As the bathroom mirror surface cools, the warm air increases the humidity, causing the mirror to fog.


Warm water increases the humidity in the air. As a result, warm air turns into dew as it cools. Excess moisture causes thin water droplets to form on the mirror surface. And we call this transformation fog or steaming up.