Few things are as annoying as cleaning your car windows, stepping back to admire the result, and finding they're covered in smears. It seems like it should be simple — spray, wipe, done. But glass cleaning is one of those jobs where the wrong approach makes things actively worse.
Here's why it keeps going wrong, and how to do it properly.
Why Car Glass Smears
There are a few common reasons glass comes out streaky:
Wrong product. Household glass cleaners often contain ammonia or silicones that work fine on windows at home but leave a residue on car glass, especially on tinted windows where ammonia can cause degradation over time.
Dirty cloths. If the microfibre you're using has polish, wax, or dressing contamination on it, it'll smear it all over your glass. Glass cleaning needs dedicated, clean cloths.
Too much product. More spray doesn't mean a better result — it means more residue to wipe away. A light, even application works better.
Wrong technique. Going in circles traps residue. Spreading contamination from the edges back into the middle. One-direction, overlapping passes are much more effective.
Grease and oils on the glass. Fingers on glass, interior off-gassing from vinyl and plastic, products from tyre dressings or trim sprays — all of these create a greasy film that a basic wipe won't shift.
What You Need
A dedicated automotive glass cleaner. Clear View is formulated specifically for car glass — it cuts through oil, silicone residue, and traffic film without leaving streaks or damaging tints. It's ammonia-free, so it's safe for use inside the car where there's often more sensitive trim nearby.
Two clean microfibre cloths per window. One for applying and spreading the product, one dry and clean for the final buff. This is non-negotiable if you want streak-free results — the second dry pass is what eliminates any remaining residue.
A separate glass-only cloth set. Keep your glass cloths completely separate from your bodywork cloths. Wax and polish contamination on a glass cloth is a shortcut to streaks. Wash them separately and store them separately.
The Right Technique for Exterior Glass
For the outside of the windows — windscreen, rear screen, and side glass:
- Rinse the glass during your normal car wash to remove any loose dirt and surface contamination
- After washing the car, apply a couple of sprays of Clear View to a clean microfibre cloth (not directly onto the glass — you get better control applying to the cloth)
- Work across the glass in straight, overlapping horizontal passes — don't scrub in circles
- Immediately follow with a second dry microfibre cloth, again in straight passes
- Check the glass from different angles — any remaining residue shows up from low angles under light
On the windscreen especially, look for any hazing from wiper grease. If the wipers are smearing in wet weather, clean under the blades with Clear View and they'll clear more effectively.
The Right Technique for Interior Glass
Interior glass is usually harder than exterior. The inside of a windscreen in particular tends to get a greasy, hazy film from off-gassing plastics and vinyl — that new car smell is essentially your dashboard evaporating onto the glass.
It's also at an awkward angle to reach properly.
How to do it:
- Wind the windows down slightly before you start — it makes reaching the top edge of the side glass much easier
- Apply Clear View to a microfibre cloth — lighter application than outside since there's less contamination from road grime
- For the windscreen, work in sections using vertical passes (reaching across the whole width is difficult and you'll miss patches)
- Buff immediately with a second dry cloth, working from left to right in horizontal passes
- Stand outside the car and look through the windscreen at a shallow angle to check for any remaining haze
A key tip for the interior windscreen: if the contamination is heavy (you can see a milky film), a light pre-wipe with a slightly damp cloth removes the worst before your glass cleaner pass. Don't saturate the cloth — just slightly damp.
After Glass Cleaning — Rain Repellent
Once your glass is genuinely clean, you can apply a hydrophobic glass treatment to the exterior. These products cause water to bead and roll off the glass at speed, significantly improving visibility in rain.
Clear View preps the glass perfectly for this — the cleaner surface means the repellent bonds properly and lasts longer.
Quick Fixes for Smears in a Hurry
Already out and noticed smeared glass? A few sprays of Berry Quick and a clean microfibre cloth will clear light smearing from exterior glass in a pinch. It's not a substitute for a proper glass clean, but it'll sort you out quickly.
Clear View glass cleaner is at juicy-details.co.uk — ammonia-free, streak-free, and safe on tints.