Your car headlights require regular cleaning and maintenance to provide optimal visibility. That’s why many people turn to a headlight sealant for protection.
However, finding the best headlight sealant isn’t always easy, so we put together a complete review guide for you.
Replacing car headlights can be a costly endeavor. Protecting the lenses with the best headlight UV sealant can help you avoid this costly replacement down the road.
Not only is it cheaper, but it provides UV protection that keeps the lenses looking their best. With a little care and the right car headlight sealant, you can prolong the life of your automotive lighting.
3 Common Types of Headlight Sealants Explained
Tips for Choosing the Best Sealant for Your Headlights
The headlight UV sealant you choose will depend on what type of material your headlights are made of. You will want a different product to apply to plastic versus glass headlights. Read the product specification to ensure it is suitable for use with your headlights, or you might be disappointed.
How often will you need to apply the headlight sealant glue? If you don’t mind applying it every month, you can choose a cheaper formulation. However, if you want a longer-lasting product, you will need to anticipate a higher price.
Level of Protection
You want a headlight gasket sealant that provides both moisture and UV protection. After all, these are the two elements that damage the headlight lens the quickest. The more protection offered, the higher the price tag will be, but it's still cheaper than replacing the assembly.
If you are planning to seal all of the lights and that of your spouse’s car as well, you will need more product. Read the reviews to determine how many applications are in each bottle. Otherwise, you could get halfway through and realize that you’ve run out.
Ease of Application
With some car headlight UV sealant products, you will need to use your drill for buffing the lenses. If you don’t want to do this, look for an application that doesn’t require a drill. The market is filled with quality options of either choice.
You don’t want to deal with toxic and dangerous chemicals when applying a headlight sealant UV protection. Check the ingredients to ensure your safety and to gather the equipment needed for the application. With some products, you might need gloves for more protection.
If you are looking only at getting a cheap headlight cleaner and sealant, you might miss out on the protection you need. Instead, focus on buying a reliable headlight assembly sealant from a reputable brand. Read through customer reviews to find the formula that is a good value and provides effective results.
5 Best Headlight Sealants Reviewed
1. Blue Magic 730-6
Best Headlight Sealant (Top Pick!)
Method of Application
This headlight sealer is meant to be sprayed onto the headlight lens itself for maximum protection. Most people choose to use it on either new or recently restored headlight lenses. With this simple protection, you keep the UV rays from baking the lens, which could lead to yellowing or oxidation. Additionally, this sealant keeps the grime and dirt off of your clean lenses.
The top reason for choosing this formula is because of the ease of application. It doesn’t get much easier than spraying on a sealant and getting on with life. However, there are mixed reviews about the longevity of the spray. Some people claim that it lasts for several months, while others claim it should be reapplied after every car wash.
Even with that debate going on, the reviews are off the charts. Customers are pleased with the results as this sealant does a great job protecting headlights. Even though the price is reasonable, you will have to determine how much will be spent if you have to reapply it often. If this is something that does require regular use, it could end up costing you more than a premium sealant overall. Still, we felt it deserved the top spot on our list.
2. Morimoto Butyl
Best Headlight Sealant Glue
Method of Application
If you want weatherproof protection to reduce condensation, you should look for the best butyl headlight sealant, such as this one. This OEM-grade headlight sealant is made from butyl rubber and available in either black or gray. It measures 7.5 mm thick, but you can stretch it to make it thinner. The best part about this product is it works great on more than just headlights. In fact, the multi-purpose design is also suitable for sealing sunroofs and windshields. That's how durable it is.
When this sealant reaches room temperature, it’s harder than glue, offering a longer life. Additionally, the package comes with glue for a secure hold. It’s the ideal solution to reseal your headlights and keep the moisture out, but this won’t do anything to stop UV rays from hurting your lenses, so you might consider a protectant for that as well.
The only trouble with using a product such as this one is the application process. It will take far longer than merely protecting the headlight lenses. You must stretch out the rubber to fit the thickness of your headlight channel. Then, you must cut it until it reaches the desired length. Your next step is to place it in the housing and heat it at 265-degrees Fahrenheit for seven minutes. Once that is done, you can reassemble the headlight. However, some people find all of this work to be tedious.
3. Turtle Wax T-43
Best Car Headlight Sealant + Cleaner
Method of Application
Our next Turtle Wax headlight cleaner and sealer review shows you why having a sealant and a cleaner is a good idea. Turtle Wax is a leader in car care products, so the company can be trusted to protect your headlights too. This 2-in-1 product makes everything easier by restoring optimal clarity and preventing further yellowing at once.
The wipe-on formula uses acrylic resins that stop oxidation and cloudiness from ever occurring. You can apply it to your new headlights for prevention or use it after a headlight restoration to keep the problems from coming back. It also features a multi-purpose application, allowing you to use it on any translucent plastic, such as windows and plexiglass. Plus, you can’t argue with the price, which is one of the best on the market.
To use the Turtle Wax kit, you want to start with clean headlights. Then, simply apply a small amount to your clean cloth. Rub it on the lens with firm pressure until the lens is clear. After this, you will want to use another clean cloth for buffing. Of course, this product won’t do much for heavily oxidized headlights. In these situations, you will want to use a headlight restoration kit instead.
4. Chemical Guys GAP11516
Best UV Sealant For Car Headlights
Method of Application
4 or 16 oz.
If anyone can be trusted with car care needs, it's Chemical Guys. One of the company's top products is this Chemical Guys headlight sealant. This product restores foggy, hazy, and yellow headlights to provide optimal visibility. The advanced polish includes a synthetic protectant, making it a superior all-in-one product. To use it, you only have to rub it on the headlights. The company states that sanding isn't necessary, but claims you can still do it if you want better results.
Additionally, the durable protection keeps UV rays from further damaging the headlight lenses. You can use it on your car, truck, motorcycle, or RV. While the manufacturer supplies instructions for average oxidation, there are additional steps that can be taken for advanced damage. That’s why you are going to pay a little more for this formula versus the ones that won’t work on heavily oxidized headlights.
Just take a look at the customer reviews if you are on the fence at all. It’s clear what users think about this Chemical Guys product, as with others from this manufacturer. Plus, you can purchase it in a 4- or 16-ounce bottle, depending on how many vehicle headlights you plan to work on.
5. Permatex 81173
Best Headlight Silicone Sealant
Method of Application
3 or 12.9 oz.
To round out the best sealant list, we have one more headlight sealer meant to keep the moisture out. While this product isn't specifically designed for headlights, it gets the job done. The general-purpose black sealant is useful on various indoor and outdoor projects, allowing you to multi-task with the leftovers. This sealant works to seal, repair, bond and mend glass, plastic, metal, vinyl, fabric, and weather stripping.
The waterproof and flexible construction keeps water and weather out, while also resisting vibration. The company recommends using it between -75°F to 450°F, so it should work well on a variety of automotive applications. It’s also available in both a three and 12.9-ounce bottle, ensuring you have the amount needed to get the job done. You can even buy a case if you are working on cars for a living.
As far as the application is concerned, it doesn’t get much easier than this formula. You simply squeeze out the adhesive from a vertical or horizontal application. Of course, this application can get a little messy, so make sure you have a rag handy for the cleanup. Once you are done sealing your headlights, it’s time to find other objects to protect!
Headlight Sealants vs. Clear Coats: Which Is Better?
Both the sealant and the clear coat provide protection but in different ways. The true clear coat goes on the lens itself to protect it from debris and UV rays. Using a sealant strictly will only keep the moisture out of the lens to reduce condensation. Ideally, you would use both products to provide the best protection.
Headlight Restoration: How to Use Sealants
If you want to apply a headlight sealant after restoration, there are several steps you can take. For example, if you are using a restoration kit, such as the one shown in this YouTube Video, you can remove oxidation and apply the protection at once.
However, if you are simply looking to keep condensation out of the headlights with a sealant, these are the steps you will take.
- 1Read the product directions
- 2Unfasten the headlight.
- 3Soften the existing sealant with a heat lamp.
- 4Pry the headlight apart, which should be easier if you softened the sealant.
- 5Apply the new sealant and allow it to harden slightly.
- 6Put the light back together.
- 7Clamp the headlight until the sealant is cured.
- 8Remove any excess sealant and reinstall headlight.
People Also Ask (FAQs)
What are some common headlight issues that many drivers face?
Headlight visibility is crucial, but the IIHS suggests that not all headlights are working the way they should. Many people suffer from cloudy/dirty headlights, oxidation, yellowing lenses, hazing, or fogging from condensation. All of these problems could lead to a decrease in visibility, especially at night.
Is it safe to use a headlight sealant on my car?
Yes. Using a sealant and clear coat is safe, as long as you purchase a reputable product from a reliable vendor.
How long do headlight sealants last on average?
There's no clear cut answer, but using a sealant will dramatically increase the headlight's life. Using a fine film can trap the polish, cleaner, and UV protection in place. Additionally, using a sealer to keep moisture out of the assembly can also increase the time needed between restorations.
How do you protect headlights from UV light?
Use a headlight UV protectant, sealant, or vinyl film over the headlights. You can choose from spray-on or wipe-on products that add a coating to your factory or aftermarket headlights.
How do I clean heavily oxidized headlights?
Aside from buying commercial products, some household items can help remove oxidation. Consider using toothpaste, glass cleaner, WD-40 or baking soda.
What is the best headlight sealant? We recommend Blue Magic 730-6, which is easy to use and comes highly rated. It’s the perfect solution to ensuring maximum visibility while heading down the road.