McKee's 37 Headlight Protectant Spray 8oz — UV Sealant for Plastic Lenses, Clears Haze & Fills Microscratches

McKee's 37 Headlight Protectant Spray is a clear polymer sealant that forms a UV-resistant protective film on plastic headlight lenses, vinyl windows, and motorcycle windscreens.

Keep plastic lenses looking and performing like new by sealing microscopic pores that let in UV light, moisture, and contaminants. This 8oz formula uses cross-linking polymers to create a long-lasting, transparent barrier that slows yellowing, fading, and discoloration while improving surface clarity. It's formulated for use on clear plastic headlight lenses, vinyl windows, and motorcycle windscreens and is designed to be easy to apply during routine detailing or after headlight restoration.

How does this product protect headlights from UV damage?

The protectant deposits a thin, durable polymer layer that blocks harmful UV rays from penetrating plastic lenses. By sealing pores and forming a cohesive film, it reduces the chemical breakdown that causes yellowing and hazing over time.

• Cross-linking polymers create a cohesive barrier against UV exposure
• Seals surface pores to slow plastic degradation
• Reduces early-stage yellowing and surface haze

Will it improve night driving brightness and optical clarity?

Treated lenses often appear clearer and transmit light more efficiently because the sealant fills tiny rough spots that scatter light. While it enhances visual clarity by reducing haze, it complements—rather than replaces—mechanical restoration for severely oxidized lenses.

• Fills microscratches and smooths surface irregularities
• Restores clearer light transmission after proper cleaning or restoration
• Safe for follow-up polishing if deeper restoration is needed

How long does one application last and how much coverage does the 8oz bottle provide?

The polymer finish is formulated to be durable and water-resistant, so one proper application can last months to years depending on exposure and maintenance. An 8oz bottle covers multiple vehicles—enough to protect over ten headlights when applied sparingly and evenly.

• Durable, water-resistant film for long-term protection
• 8oz volume provides coverage for more than ten headlight lenses with typical application
• Reapplication frequency depends on climate, driving conditions, and cleaning routines

How do I apply McKee's 37 Headlight Protectant Spray safely and effectively?

Application is straightforward: clean and dry the surface, spray a light, even mist, then wipe away excess to leave a thin uniform film. It's ideal for new lenses, freshly restored headlights, and clear vinyl or windscreen areas that need added protection.

• Start with a thoroughly cleaned, dry lens surface
• Spray lightly and wipe with a microfiber cloth to level the product
• Allow to cure per instructions before exposing to heavy moisture or driving

Who is this for? McKee's 37 Headlight Protectant Spray suits car owners, motorcycle riders, and detailers who want a professional-grade, user-friendly sealant to extend the life and appearance of plastic headlights, vinyl windows, and windscreens. It’s a practical choice after headlight restoration, for preventive maintenance on newer lenses, or for enthusiasts who prefer a polished, protected finish. Professionals and hobbyists alike will appreciate the ease of application, long-lasting protection, and improved optical clarity this treatment delivers.