Informational Guide

How To Get Moisture Out Of Headlights

Learn how to get condensation & moisture out of your headlights as well as the maintenance required to keep it away.

When it comes to your automotive headlights, nothing is more frustrating than dealing with condensation. Thankfully, we can show you how to get moisture out of headlights, which only involves some simple techniques. We can also teach you how to get condensation out of headlights and keep it away with some maintenance.

Condensation is the term given to the action of water vapor turning back into liquid water. Before you learn how to get moisture out of car headlights, you want to learn what causes it. When the outside air is cooler than the air found in the headlight assembly, condensation occurs. Warmth is created by the bulb heat and also helps accelerate the formation of water in your headlights.

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How Does Trapped Moisture Affect Headlights?

Why do you need to know how to get moisture out of your headlights? If you allow the moisture and condensation to build up, it can lead to diminished visibility. Without being able to see clearly, you put yourself at risk on the road. Furthermore, the moisture can lead to corrosion inside the headlight assembly, which would require further parts and repair later.

Headlight Moisture Removal

Sometimes, you can figure out how to get moisture out of headlight assembly by merely allowing it to dry on its own. Occasionally, it will go away after you turn on the headlights and allow the heat to evaporate it.

You can also speed up the process by using a hairdryer. If you want to know how to get moisture out of the headlight lens, we recommend removing the assembly for this process. However, don't let the heat get hotter than 180 degrees. Anything hotter than this can harm the wires and electrical system.

In some cases, you can also use compressed air. This is helpful if a vent is blocked, which is causing the condensation. However, if all else fails and you can’t figure out how to get moisture out of sealed headlights, you may need to replace them completely. Getting aftermarket headlights might be the only viable solution left.

Preventing Moisture from Reoccurring

If you don’t want to learn how to get condensation out of a car headlight again, you must prevent it from occurring. This is done by creating a strong, dependable seal. Simply run silicone sealant around the factory seal to ensure no moisture enters the assembly. You can also add desiccant packets in the housing to prevent condensation from building up. What’s most important is that you regularly inspect the headlights and resolve any issues quickly.

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When is it Time for Replacement?

After you’ve spent time cleaning and applying the best clear coat for headlights, you might be reluctant to replace them, but there are times when you must. After all your hard work, you might still notice a good amount of condensation trapped in the assembly. When this happens, replacement is your only option. In many cases, your problems are related to a defect with the assembly itself. Therefore, a replacement should fix the issue and allow you to see clearly again. Inspect your headlights often. If you notice cracks or other defects that cannot be fixed, do yourself a favor and replace the assembly.

People Also Ask (FAQs)

Can moisture in my headlights make my car defective?

While most times it reduces visibility or causes the bulb to go bad, it can cause an electrical short in some models.

Does snow cause moisture in headlights?

If precipitation is able to get into the headlight assembly, it can lead to condensation. However, you can repair the majority of problems by making sure there is a tight seal on the headlight.

What are some products I can keep in my garage for dealing with this problem?

It’s always good to keep a tube of silicone sealant on hand, but many people also recommend using the desiccant packets to reduce moisture.


You don't need to be an auto mechanic to learn how to get moisture out of headlights. With some simple household products, you can remove and prevent the condensation from building up. Follow our guide, and you will see clearly once again.