To clean car headlights on a car, start by washing them with soap and water, then use either a household method like toothpaste or baking soda, or a dedicated restoration kit, and finish with a UV protectant so they stay clear longer. This improves night-time visibility and also makes the front of the car look newer and better maintained.

Quick Scoop

  • Cloudy headlights are usually from UV damage and oxidation on the outer plastic, not dirt on the inside.
  • You can clear them using simple items like toothpaste or baking soda and vinegar, or go more professional with wet-sanding and a clear coat or restoration kit.
  • Always protect the plastic afterward with a UV sealant or clear coat, or they will haze again much faster.

What You Need

Common, easy DIY options:

  • Car shampoo or dish soap, water, and microfiber cloths
  • Masking tape (to protect paint around the headlight)
  • Option A: Toothpaste (preferably whitening or with baking soda)
  • Option B: Baking soda and vinegar (to make a paste)
  • Spray bottle of clean water
  • Optional but recommended: UV protectant or clear headlight sealant

More advanced / longer-lasting:

  • Wet/dry sandpaper (for example 600, 1000, 1500, 2000 grit)
  • Rubbing alcohol to clean before coating
  • 2K clear coat spray or a headlight restoration kit with clear finish

Simple Toothpaste Method

This is the quick, low-cost way that works well for mildly cloudy or yellowed headlights.

  1. Wash and prep
    • Wash the headlights and surrounding area with soap and water, then dry completely with a microfiber cloth.
 * Mask around the headlight edges so you do not rub toothpaste into the paint.
  1. Apply toothpaste
    • Put a small amount of toothpaste on a damp microfiber cloth.
    • Rub it into the headlight in overlapping circular motions for 5–10 minutes per light, applying moderate pressure.
  1. Rinse and inspect
    • Rinse with clean water and wipe dry.
    • If they are still hazy, repeat the toothpaste step once or twice more.
  1. Protect with UV
    • Once clear and dry, apply a UV protectant or sealant designed for plastic headlights.
 * This protective step is what helps the clarity last instead of fading again in a few weeks.

Baking Soda & Vinegar Method

This is another “kitchen cupboard” fix that works similarly to toothpaste.

  1. Make the paste
    • Mix baking soda and distilled vinegar in roughly a 1:1 or 2:1 ratio to form a thick paste; it will fizz a little, which is normal.
  1. Scrub the lens
    • Using a microfiber cloth, rub the paste into the headlight in small circles, covering the entire lens.
    • Let it sit for a few minutes, then continue gently scrubbing.
  1. Rinse and dry
    • Rinse with clean water until all residue is gone and dry with a clean cloth.
  1. Seal against UV
    • Finish with a UV sealant or plastic protectant to slow future oxidation.

Wet-Sanding & Clear Coat (Deeper Restoration)

For very yellowed, badly pitted, or heavily oxidized headlights, a more serious restoration gives much longer-lasting results.

  1. Prep and protect
    • Wash the headlights thoroughly and tape all around the lens to protect paint and trim.
 * Keep a spray bottle of water handy to keep the surface wet during sanding.
  1. Wet-sand in steps
    • Start with a coarser grit such as 400–600 if the lens is very bad, otherwise 800–1000.
 * Sand with water in one direction, then move to a finer grit (e.g., 1000, 1500, 2000), often changing sanding direction each time; the goal is to remove the previous scratches gradually.

 * Keep the lens wet and use only light to moderate pressure so you do not burn through the plastic.
  1. Clean and dry
    • Rinse off sanding residue and wipe with rubbing alcohol to remove oils and ensure a clean surface for coating.
  1. Apply clear coat or sealant
    • Spray a 2K clear coat or the clear step from a headlight restoration kit evenly over the lens, following the product’s instructions and using light coats to avoid runs.
 * Allow proper curing time; done right, this method can keep headlights looking clear for years rather than months.

Safety & Extra Tips

  • Avoid harsh tricks: Things like using a blowtorch or “lifehack” chemicals can damage the plastic or even be a fire risk and are not recommended by professionals.
  • Do both headlights together: This keeps the look and light output even from side to side.
  • Reapply UV protection: Even with a good sealant, reapply a plastic-safe UV protectant every few months to slow down yellowing.
  • Consider replacement: If the inside of the headlight is damaged or the outer plastic is deeply cracked, replacing the headlight assembly might be more effective than repeated restoration attempts.

Information gathered from public forums or data available on the internet and portrayed here.