McKee's 37 Headlight Protectant Spray — 8oz UV Sealant for Plastic Headlights & Vinyl, Long‑Lasting Clarity

McKee's 37 Headlight Protectant Spray is an 8oz polymer sealant that forms a clear, durable film to shield plastic headlight lenses, vinyl windows, and motorcycle windscreens from UV, water, and environmental damage.

This spray-on protectant uses advanced cross-linking polymers to fill and seal microscopic pores in clear plastic headlight lenses, reducing the factors that cause yellowing, fading, and surface deterioration. It’s formulated for easy application: spray on, wipe off, and leave behind a long-lasting barrier that improves optical clarity and resists contaminants. The compact 8oz size covers multiple headlights and is suitable for both newly installed lenses and restored headlights that need protection.

How does this protectant stop headlights from yellowing?

The product lays down a polymer film that blocks UV photons from penetrating the plastic and oxidizing the surface. By sealing the lens pores, it also prevents water and airborne pollutants from accelerating degradation.

• UV-blocking cross-linking polymers reduce photochemical breakdown.
• Pore-sealing action prevents moisture and grime ingress.
• Creates a stable outer layer that resists discoloration and hazing.

Will it improve night-time visibility or optical clarity?

Treated lenses maintain clearer light transmission by minimizing surface haze and yellow cast that scatter beams. While it won’t change bulb output, preserving lens clarity helps headlights perform closer to their original specification.

• Reduces surface haze for more focused light output.
• Helps maintain cleaner light projection over time.
• Useful after restoration to extend visual performance gains.

How long does one application last and how much coverage do I get?

A single treatment forms a durable barrier designed to last months to years depending on exposure and driving conditions. The 8oz bottle gives enough product to treat more than ten standard automotive headlights when applied as directed.

• Long-lasting polymer finish that withstands weather and road grime.
• 8oz size provides multi-headlight coverage—ideal for multiple vehicles or repeat maintenance.
• Reapply as needed based on wear, typically after seasonal inspections or restoration.

How easy is it to apply and what surfaces are compatible?

Application is straightforward: spray onto a clean, dry plastic lens or vinyl window, wipe evenly, and buff away residues for a clear, protective finish. The formula is intended for clear plastic headlights, vinyl windows, and motorcycle windscreens, not painted surfaces or cracked lenses.

• Spray-on, wipe-off application for fast DIY use.
• Works on plastic headlight lenses, vinyl, and windscreens made from clear plastics.
• Follow instructions for restored or newly replaced lenses to maximize longevity.

Who is this for? McKee's 37 Headlight Protectant Spray is made for car owners, motorcycle riders, and detailing enthusiasts who want an easy, professional-grade way to protect clear plastic lenses and vinyl glazing. It suits anyone restoring headlights and wanting to lock in clarity, fleet managers aiming to reduce maintenance, or hobbyists seeking durable UV protection. For best results, use on clean, defect-free lenses and follow standard restoration or cleaning steps beforehand.