Top 10 Best Paint For Headlights That Will Blow Your Mind

Restoring the clarity and appearance of your vehicle’s headlights can be a real challenge, especially when fading and yellowing reduce visibility and affect safety. Choosing the right product to protect or revive your headlights makes a noticeable difference, and that’s where the best paint for headlights comes into play. This type of paint is designed specifically for automotive headlight surfaces, helping to improve brightness, prevent further damage, and maintain a clean, polished look.

It suits drivers who want an affordable way to enhance their car’s lighting while extending the lifespan of their headlight lenses. In this review, we will explore some of the most effective headlight paints available, highlighting their features, ease of application, and durability.

Whether you want to improve visibility on the road or simply boost your vehicle’s appearance, this guide will help you find a paint that fits your needs.

Enhance Clarity and Shine with These Top Coating Solutions for Your Headlights

Image	Product	Price
Our Recommended 1	CERAKOTE® Ceramic Headlight Restoration Kit – Guaranteed To Last As	Check Price
Our Recommended 2	3M Ultra Headlight Restoration Kit, Contains Masking Tape, Light Sanding	Check Price
Our Recommended 3	Headlight Restoration Kit, 800g Vapor Headlight Restoration Kit, Head Light	Check Price

1. CERAKOTE® Ceramic Headlight Restoration Kit – Guaranteed To Last As

Restore clarity and brilliance to dulled headlights with the CERAKOTE® Ceramic Headlight Restoration Kit. Designed for lasting protection, it combines easy application with advanced ceramic technology.

This all-in-one solution refreshes headlights and shields them from future damage.

The kit promises effects that endure as long as you own your vehicle, offering a blend of convenience and durability. Its straightforward process makes headlight restoration accessible to every car owner.

The CERAKOTE® kit includes oxidation removing wipes, sanding materials, and ceramic coating wipes that chemically bond with the headlight surface. Each step addresses different layers of wear, making the headlights look like new again. No power tools are necessary, minimizing risks of additional damage during application.

The ceramic coating layer not only restores shine but also provides an effective UV barrier. This protection prevents yellowing and fading from sun exposure, maintaining visibility and safety on the road.

The process typically takes about 30 minutes, allowing users to complete restoration in a single session. Its user-friendly approach fits those who prefer an efficient, yet thorough, maintenance routine.

By combining restoration and protection, it offers strong value compared to kits lacking ceramic technology. Drivers seeking easy upkeep and a polished finish will benefit most from this kit’s integrated system and reliable performance.

Pros

• Durable ceramic coating that lasts as long as you own the vehicle
• No need for power tools, reducing risk of accidental damage
• Simple three-step process completed quickly and easily

Cons

• May require repeat application on extremely neglected headlights

This kit stands out by combining effective restoration and long-term protection. It delivers a noticeable improvement in headlight clarity with minimal effort, making it a practical choice for everyday drivers.

2. 3M Ultra Headlight Restoration Kit, Contains Masking Tape, Light Sanding

Restore your vehicle’s headlights to clear brilliance with the 3M Ultra Headlight Restoration Kit. Designed to remove yellowing and buildup, it extends headlight life and improves nighttime visibility effectively.

Whether your headlights are foggy or dull, the included sanding discs and protective coatings refresh plastic lenses smoothly. It’s an affordable solution that avoids costly replacements while delivering professional-quality restoration at home.

The restoration kit contains a disc pad holder, gold sanding discs (500 grit), white finishing discs (800 grit), and a trizact refining disc (3000 grit) to cover all stages of lens refinishing. Masking tape protects surrounding surfaces during the process, and a clear coat completes the restoration by adding a protective layer. This all-in-one approach targets plastic headlights, taillights, fog lights, and directional lights without damage.

This all-in-one approach targets plastic headlights, taillights, fog lights, and directional lights without damage.

The kit works handily with or without a household drill, adapting to user preferences and skills. Its lightweight design and clear instructions make it accessible for those tackling DIY car maintenance for the first time.

Durability and visual clarity increase after using the product, improving safety on the road. The materials included last for multiple applications, enhancing long-term value.

Pros

• Comprehensive sanding discs cover all restoration steps
• Includes masking tape and clear coat for protection
• Works with or without a drill for user convenience

Cons

• Requires patience and careful application for best results

Combining effective abrasives and protective finishes, the 3M Ultra Headlight Restoration Kit offers a straightforward way to renew automotive lenses. Its versatility and detailed components make it a solid choice for improving headlight clarity without replacement costs.

3. Headlight Restoration Kit, 800g Vapor Headlight Restoration Kit, Head Light

Restore the clarity of your vehicle’s headlights effortlessly with the Headlight Restoration Kit by HYHJMISTY. Designed to tackle yellowing, oxidation, and scratches, this all-in-one solution renews headlight brilliance and enhances driving safety. Its comprehensive kit brings professional-level results to your own garage or driveway.

This restoration set combines convenience with effective performance to extend your headlights’ lifespan. It offers a practical approach to maintaining vehicle aesthetics without needing costly replacements.

Equipped with an 800g repair fluid and multiple sanding papers ranging from 180# to 1200#, this kit efficiently removes surface damage and oxidation layers. Included accessories such as an atomizing cup, guard tape, and power cords for both home and vehicle use simplify operation.

The repair fluid’s high transparency and strong adhesion provide a long-lasting protective film after polishing.

The method involves smoothing out imperfections through sequential sanding and then applying the restorative liquid to renew the headlight surface. The toolbox is compact yet contains every necessary tool, eliminating any need for additional purchases.

Its dual power supply options allow flexible usage wherever you are, whether at home or on the road.

Ideal for those wanting clear, glare-free headlights, it combines ease of use with professional results even without prior experience. The kit delays aging effects, guards against ultraviolet damage, and improves nighttime visibility, making it a wise maintenance investment.

Pros

• Comprehensive kit includes all necessary tools for headlight restoration
• High-capacity 800g repair fluid can treat up to 70 headlights
• Dual power cord options provide versatility for use at home or in the car

Cons

• Heating process requires careful handling to avoid burns

The HYHJMISTY Headlight Restoration Kit offers exceptional value by combining ease, durability, and comprehensive tools. It stands out as a cost-effective alternative to headlight replacement, delivering visibly clearer headlights and improved road safety with every use.

4. EPARTS 1 X 110ml Orange Amber Tint Lens Color Paint

Upgrade the look of your vehicle effortlessly with the EPARTS 110ml Orange Amber Tint Lens Color Paint. Designed to enhance your car’s lighting elements, this vibrant paint adds a sporty, eye-catching flair to your headlights, tail lights, and side markers.

Developed with Japanese craftsmanship and quality assurance, it delivers reliable performance while offering easy application. This tint paint transforms ordinary lenses into striking features that stand out on the road.

EPARTS Orange Amber Tint Lens Color Paint is compatible with virtually all vehicle types. It is formulated specifically for use on headlight, tail light, and side marker lenses, but should never be applied on windows. The product’s durable formula resists fading and maintains a vivid color for an extended time.

The product’s durable formula resists fading and maintains a vivid color for an extended time.

Applying the paint requires no professional skills. Just point and spray for full coverage and smooth finish, making it convenient for vehicle owners who want a quick upgrade.

Made in Japan, the paint upholds high manufacturing standards and provides peace of mind with a quality guarantee. It is a cost-effective way to add personalized style and improve curb appeal, especially for drivers aiming for a racing-inspired look.

Pros

• Easy, spray-on application for smooth tinting
• Compatible with multiple vehicle light lenses except windows
• High-quality, fade-resistant finish with made-in-Japan reliability

Cons

• Not suitable for glass window surfaces

EPARTS Orange Amber Tint Lens Color Paint offers a simple and effective way to refresh and customize your vehicle’s lights. Its ease of use and quality results make it a strong option among other tint paint alternatives.

5. Turtle Wax 54349 Renew and Restore Wipes, Car Paint Scratch

Restore your vehicle’s shine and clarity effortlessly with Turtle Wax 54349 Renew and Restore Wipes. These wipes are specially formulated to remove oxidation, yellowing, and light surface imperfections from headlights and other surfaces, providing a quick and effective solution. Their compact, single-use packaging makes maintenance convenient, even on the go.

Their compact, single-use packaging makes maintenance convenient, even on the go.

Designed for versatile use, the wipes are safe on various materials such as paint, glass, chrome, and stainless steel. Enjoy a hassle-free restoration experience without the need for harsh chemicals or extra tools, perfect for car, home, and marine care needs.

Turtle Wax 54349 Renew and Restore Wipes tackle multiple surface issues like yellowing headlights, swirl marks, bugs, and water spots. The formula gently lifts oxidation and paint transfer without damaging clear coats or delicate finishes. This balance ensures surfaces regain their original look while maintaining long-term protection.

Each wipe offers strong cleaning power through simple application. Wiping the affected area with firm, circular motions produces visible improvements quickly.

These unscented wipes come in individual packets, making storage and usage straightforward. Their versatility extends beyond headlights to include glass, plexiglass, and chrome surfaces found in various environments.

Turtle Wax delivers reliable performance with practical convenience, supporting ongoing care with minimal effort.

Pros

• Effectively removes oxidation and light surface imperfections
• Safe for multiple surfaces including paint, glass, and chrome
• Convenient single-use packets for easy, on-the-go application

Cons

• Wipes may dry out quickly if not sealed properly after opening

Offering efficient restoration and versatile application, Turtle Wax 54349 Renew and Restore Wipes stand as a smart choice for maintaining vehicle and household surfaces. Their ease of use combined with gentle yet effective results make them a valuable addition to any cleaning routine.

6. Turtle Wax Scratch Repair and Renew, Car Scratch Remover, Tackles

Restore your car’s finish with Turtle Wax Scratch Repair and Renew. This versatile formula targets light scratches, swirl marks, and dull spots to rejuvenate your vehicle’s appearance quickly. It works not only on paint but also on clear plastics like headlights, making it a genuinely multifunctional solution.

It works not only on paint but also on clear plastics like headlights, making it a genuinely multifunctional solution.

Designed for easy use by hand or with a machine polisher, Turtle Wax Scratch Repair and Renew brings professional-level results at home. Its protective resins seal the repairs, helping your vehicle maintain a flawless look for longer periods, beyond what typical scratch removers offer.

The innovative polish removes minor surface imperfections such as light scratches, swirls, scuffs, paint transfer, and oxidation from headlights. This significantly improves your car’s overall shine and clarity.

Compatible with all glossy paints and clear hard plastics, it ensures safe use on various vehicle surfaces. The protective resins bond with the clear coat, locking in repairs to resist rain and washing, providing a durable finish.

Turtle Wax’s scratch remover is a budget-friendly option to erase years of wear and tear in minutes. Its versatility and gentle formula make it suitable for car owners looking to enhance their vehicle’s appearance without professional help. Compared to other scratch removers, it balances effective performance with ease of use and lasting protection.

Compared to other scratch removers, it balances effective performance with ease of use and lasting protection.

Pros

• Effectively removes light scratches and headlight oxidation
• Protective resins seal repairs for lasting shine
• Safe on all glossy paint and clear hard plastics

Cons

• Less effective on deep scratches requiring professional repair

Turtle Wax Scratch Repair and Renew offers a reliable and simple way to improve your car’s appearance. It combines surface correction with protection and suits a wide range of surfaces, making it a valuable addition to vehicle care routines.

Its balance of performance and convenience helps maintain a polished look effortlessly.

7. Car Headlight Restoration Kit, Auto Headlight Lens Polish Repair Kit

Clear and bright headlights are vital for safe driving, and the Car Headlight Restoration Kit offers a complete solution to restore your vehicle’s lighting instantly. Designed to combat yellowing, haziness, and oxidation, this kit revives headlight clarity to enhance visibility on the road.

Everything needed for professional headlight repair is included, making it simple and efficient to bring back headlight brilliance without extra purchases. Its compact aluminum alloy storage box keeps all components organized for convenience.

The kit features a robust 200ml repair liquid combined with a coated atomized steel cup that heats the solution for quicker, more effective restoration. Six types of sandpaper facilitate gradual smoothing to eliminate scratches and cloudiness without damaging the lenses. The included sanding plate and textured paper support precise workmanship for consistent results.

The included sanding plate and textured paper support precise workmanship for consistent results.

The dual power supply options—110V home power and car power adapter—allow users to restore headlights anywhere with ease. No need to detach headlights or perform complex procedures, saving time and effort. The process quickly restores severely oxidized or yellowed lenses, improving light output and safety during nighttime driving.

Safe application instructions accompany the kit, including precautions during heating and usage, ensuring responsible handling. This kit stands out by combining comprehensive accessories, user-friendly operation, and durable materials to deliver excellent value and dependable performance for car owners focused on maintaining their vehicle’s appearance and safety.

Pros

• Complete restoration set with all necessary accessories included
• Dual power supply options for flexible and convenient use
• Effective removal of yellowing, oxidation, and headlight scratches

Cons

• Heating element requires careful handling to avoid burns

This headlight repair kit offers an all-in-one solution that revives lens clarity and improves driving safety. Its thoughtful design and included tools make refurbishment practical without professional help, providing excellent value for vehicle owners seeking to maintain high headlight performance.

8. Headlight Restoration Kit, Headlight Cleaner & Sealant – Pro Grade

Restore your vehicle’s headlights to a factory-like clarity without the hassle of sanding or grinding. This Headlight Restoration Kit offers a simple spray-and-wipe solution that brightens and protects your lenses in minutes.

The kit’s advanced ceramic sealant forms a durable bond that outlasts typical cleaners. You can expect long-lasting resistance against scratches and daily wear, keeping your headlights looking flawless over time. Perfect for drivers seeking a quick, effective way to renew faded or yellowed lenses.

Perfect for drivers seeking a quick, effective way to renew faded or yellowed lenses.

Designed by Guangzhou Liangdao Automotive Technology, this kit uses a premium formula that cleans and coats headlights without sanding. The no-grind approach protects original lens coatings, preventing damage during restoration. Its all-in-one solution handles hazing, yellowing, and cloudiness, eliminating the need for multiple products.

The permanent ceramic coating not only enhances clarity but also guards against road debris and scratches, extending lens life. This product delivers a smooth, glossy finish resembling new headlights, significantly improving nighttime visibility. Its intuitive spray-and-wipe design makes the process easy and accessible for any DIY user.

Its intuitive spray-and-wipe design makes the process easy and accessible for any DIY user.

Compact and lightweight at just 7 ounces, the kit offers excellent usability and portability.

The product strikes a balance between performance, convenience, and lasting protection, refreshing your car’s appearance in minutes.

Pros

• No sanding or grinding needed, preserving lens quality
• Durable ceramic sealant provides long-lasting protection
• Simple spray-and-wipe application for quick results

Cons

• May require multiple applications for severely oxidized lenses

This Headlight Restoration Kit delivers excellent clarity and protection without complex steps. It’s a practical choice for anyone wanting to improve headlight performance safely and efficiently. Compared to other kits requiring sanding, this product preserves your lenses while offering lasting results.

Compared to other kits requiring sanding, this product preserves your lenses while offering lasting results.

9. STAY-TUNED, 1 X VANS 110ML JDM Lens Painting Spray Can

Enhance your vehicle’s style with the STAY-TUNED VANS 110ML JDM Lens Painting Spray Can. Designed to provide a sharp yellow tint, it significantly upgrades your car’s headlights and other lighting elements.

Whether aiming for a unique appearance or protecting your lenses, this spray can offers excellent coverage and long-lasting results. It’s a straightforward solution for automotive lens customization that balances quality and convenience.

STAY-TUNED’s spray can is formulated specifically for exterior use on headlights, fog lights, corner lamps, and more. It delivers even coating with easy-to-follow application steps. Clean the lenses thoroughly, spray from 15-20 cm away, and repeat 2-3 times with 15-minute intervals.

The paint fully cures within 24 hours, providing a durable finish.

The 110ml aerosol can provides enough coverage for about 100 square centimeters per coat, suitable for detailed lens work. Its yellow tint enhances visibility and styling without compromising clarity.

Perfect for car owners wanting to personalize their vehicles or refresh worn lighting, it combines efficiency with ease of use. Unlike some lens paints, this spray avoids over-application, minimizing risks of uneven buildup.

Pros

• Easy application with clear spray instructions for consistent coating
• Versatile use on various automotive lenses like fog lights and corner lamps
• Durable yellow tint that enhances both look and visibility

Cons

• Installation manual is not included, so some users may need external guidance

This spray can delivers both style and function, making it a valuable addition for those customizing their car lights. Its ease of use and reliable finish justify its position as a practical lens paint option compared to alternatives.

10. Pmbqifay Headlight Restoration Kit, Car Headlight Polish Repair Renovation Kit

Restore the brilliance of your vehicle’s headlights with the Pmbqifay Headlight Restoration Kit. Designed to eliminate yellowing, scratches, and oxidation, it brings clarity and enhanced safety back to your car’s lights effortlessly.

This all-in-one kit offers a complete solution to headlight wear and tear, saving you the cost and hassle of replacements while maintaining a smooth, crystal-clear finish for improved night visibility.

The kit includes a powerful 200 ml repair fluid, sandpapers, and an atomizing cup to evenly coat headlights with a protective UV layer. This process removes oxidation and minor cracks, restoring headlights to a like-new condition. The UV coating formed is durable, scratch-resistant, and effectively prevents future yellowing and fading.

Its user-friendly design means both beginners and experienced users can easily achieve professional results without special tools. The included power supply and accessories support versatile use on a variety of headlights, tail lights, and other plastic surfaces such as motorcycle lights or helmets.

By refining damaged surfaces with precision sanding and applying a smooth, fast-drying coating, the kit not only rejuvenates appearance but also enhances safety by increasing light output. Durable quality and thoughtful packaging add value, making it a practical choice for vehicle owners aiming for long-lasting clarity.

Pros

• Effectively removes oxidation, yellowing, and minor scratches
• Provides a UV-resistant, protective coating that lasts
• Complete set with everything needed for quick, easy use

Cons

• Requires careful application for best results to avoid uneven coating

The Pmbqifay Headlight Restoration Kit offers a reliable, cost-effective method to revive your headlights with lasting clarity. It stands out for its ease of use, comprehensive tools, and quality finish, making it a valuable addition to automotive care routines.

Top Picks: Best Paint for Headlights in 2024

Safety and legal considerations

When selecting paint for headlights, paying close attention to compliance with local regulations is key to avoiding any legal issues. Some paints may not be street-legal or could affect the color and intensity of the headlights, leading to reduced visibility and safety concerns for both the driver and others on the road. Choosing products formulated with nontoxic and ecofriendly ingredients not only contributes to a safer application process but also minimizes environmental impact.

Choosing products formulated with nontoxic and ecofriendly ingredients not only contributes to a safer application process but also minimizes environmental impact. It is wise to verify that the paint does not obstruct the light output, as maintaining clear and bright illumination is crucial for safe driving conditions. By considering these factors carefully, one can select a paint that enhances appearance while adhering to safety and legal standards.

Ease of application

When choosing the best paint for headlights, understanding the differences between spray and brush-on options can help tailor the application to your comfort and project needs. Spray paints allow for an even and smooth finish, ideal for covering curved surfaces quickly, while brush-on varieties provide more control for detailed work but may require a steadier hand to avoid streaks.

Preparation is key to achieving a durable result; thoroughly cleaning the headlight surface and lightly sanding it helps the paint adhere better and prevents peeling. After application, drying and curing times vary depending on the paint type, with some formulations drying to the touch within minutes but requiring several hours to fully cure. Allowing sufficient time before exposing the headlights to moisture or handling ensures a longer-lasting finish and protects against chipping or fading.

Taking these factors into account will make the project more manageable and the final appearance more professional.

Compatibility with headlight material

When choosing paint for headlights, understanding the compatibility with the surface is key to achieving a smooth and lasting finish. Most headlights are made from plastic or glass, so the paint you select should adhere well to these materials without causing damage or flaking over time. Paints designed specifically for automotive use often have properties that help them bond firmly to smooth, non-porous surfaces like plastic lenses, maintaining durability even under exposure to weather and car washes.

Paints designed specifically for automotive use often have properties that help them bond firmly to smooth, non-porous surfaces like plastic lenses, maintaining durability even under exposure to weather and car washes. The adhesion quality directly influences how well the paint stays in place, preventing peeling or chipping that can impair both appearance and functionality. Additionally, it’s important that the chosen paint preserves or enhances lens transparency rather than clouding or dulling the surface.

Clear or translucent finishes can offer protection while allowing light to pass through efficiently, helping headlights maintain brightness and safety on the road. Considering these factors makes it easier to select a product that not only fits the material of the headlight but also supports long-term clarity and performance during everyday use.

Type of headlight paint

When choosing paint for headlights, understanding the difference between clear coat and tinted paint can make a big impact on the final look and protection of the headlights. Clear coat provides a transparent, glossy finish that enhances brightness and maintains the original color of the headlight while adding a layer of protection against scratches and environmental damage. Tinted paint, on the other hand, offers various hues that can give a custom appearance but may slightly reduce light output.

UV protection features are essential to keep headlights from fading or yellowing over time due to sunlight exposure. Paints formulated with strong UV blockers help maintain clarity and appearance for longer periods.

Durability and resistance to yellowing are key factors because headlights are constantly exposed to weather, dirt, and road debris. Selecting a paint that is designed to resist these conditions ensures that the headlights will look clearer and function better for an extended duration, reducing the need for frequent maintenance or replacement. Paints that combine these qualities work well for everyday drivers looking to protect their headlights while enhancing their vehicle’s style without sacrificing performance.

Price and warranty

When choosing paint for headlights, evaluating how the cost relates to the performance delivered helps in making a practical decision. Some options offer excellent durability and finish without a hefty price tag, making them suitable for occasional or light use, while premium products tend to provide longer-lasting protection which can justify a higher investment over time. Finding products that come in sample sizes can be beneficial to test compatibility and appearance before committing to a full purchase, especially for beginners who want to experiment without overspending.

Additionally, understanding the manufacturer guarantees and return policies provides reassurance; some brands back their products with satisfaction guarantees or straightforward return processes, adding an extra layer of confidence when trying out new paint types. Paying attention to these factors not only encourages smarter spending but also enhances overall satisfaction with the finished results.

Weather and environmental resistance

When selecting paint for headlights, it is beneficial to focus on qualities that provide excellent protection and longevity. Water and moisture resistance plays a significant role since headlights are frequently exposed to rain and car washes, helping the paint maintain its clarity and adhesion without peeling.

Heat and temperature tolerance is another important feature because headlights generate heat during use, and the paint should withstand temperature fluctuations without cracking or discoloring. Additionally, resistance to road debris and chemicals is crucial to keep the headlights looking fresh despite dirt, salt, and grime encountered during daily driving. Paints that combine these protective properties offer practical benefits, preserving the appearance and functionality of headlights while minimizing maintenance needs.

Considering these factors helps in making an informed choice that aligns well with both everyday use and varying environmental conditions.

People Also Asked

What Is The Best Paint To Use For Restoring Or Protecting Car Headlights?

The best paint to use for restoring or protecting car headlights is a clear UV-resistant automotive lacquer or clear coat, which helps prevent yellowing and oxidation. Applying a dedicated headlight restoration clear sealant after cleaning also provides long-lasting protection.

Are There Any Uv-Resistant Paints That Work Best For Headlights?

Yes, there are UV-resistant paints specifically formulated for headlights that help prevent yellowing and fading caused by sun exposure. These paints typically contain UV inhibitors and provide a clear protective coating to maintain clarity and durability.

How Does Headlight Paint Improve Durability And Clarity?

Headlight paint improves durability by creating a protective layer that resists UV rays, moisture, and debris, preventing yellowing and cracking. It enhances clarity by maintaining a clear, smooth surface that ensures optimal light transmission and visibility.

Can You Use Regular Spray Paint On Headlights, Or Is Specialized Paint Required?

While you can use regular spray paint on headlights, specialized paint designed for automotive lights is recommended to ensure durability, clarity, and resistance to UV damage. Regular spray paint may peel or obscure light output, compromising safety and appearance.

What Is The Application Process For Painting Headlights To Ensure A Smooth Finish?

The application process for painting headlights involves thoroughly cleaning and sanding the surface to remove dirt and create a smooth base, followed by applying a primer, multiple thin coats of the paint, and a clear coat for protection. Allow each layer to dry completely and lightly sand between coats to ensure a smooth, even finish.

Conclusion

Choosing the best paint for headlights involves weighing durability, UV resistance, and ease of application against potential drawbacks like the need for precise preparation to avoid uneven finishes. This type of paint is ideal for vehicle owners looking to restore clarity and protect their headlights from yellowing and fading, extending their lifespan without costly replacements. While some products may require careful handling and curing time, many options provide a reliable seal that enhances both appearance and functionality.

For those seeking an effective solution that balances performance with affordability, selecting the right headlight paint can significantly improve driving safety and aesthetics. Ultimately, the best paint for headlights offers a practical way to maintain clarity and protect your investment over time.