Glass cleaning & sealing – for clear visibility in any weather

Cleaning & Care

Sealing & Polishing

License plate holder

microfiber

Watches

A clear view that lasts – not just after cleaning.

Anyone who has ever been out in the rain or when the sun is low knows: smeared windows are dangerous.
That's why 21CARS® relies on aCompletely coordinated glass care line– from cleaner to sealant.
No smearing, no polishing, no frustration. Just crystal-clear visibility and that moment when the water runs off in tiny beads.

The 21CARS® glass cleaning system

The combination ofGlass cleaner, waffle microfiber cloth and glass sealantis the foundation for perfect visibility.

Our cleaner reliably removes dirt, fingerprints, and dust without leaving streaks.Waffle clothIt glides smoothly over the surface and removes residues without leaving streaks – a cloth that anyone who values precision should have held in their hand at least once.

Those who then21CARS® Glass SealantOnce applied, it seals in the effect: rain beads off, visibility remains clear, and the wiper becomes almost unnecessary. A system developed under real Swiss conditions – with a focus on weather resistance, limescale resistance, and durability.

More than just cleaning – Swiss-level facial care

Good glass cleaning doesn't end with cleaning, but begins with proper protection.

Especially in Switzerland, where sun, rain, and snow alternate hourly, glass sealing truly shines. It reduces the adhesive film on the glass, prevents limescale buildup, and ensures that water and dirt don't stand a chance.

This means less wiping, less glare, more safety – all without compromising driving comfort. If you've ever driven in the rain while the water dances down the windshield in fine droplets, you'll know why high-quality glass care is worth it.

FAQ – Glass cleaning, sealing & application

Do you have a question? We're here to help.

Our support team is available to you from MO-FR 8 AM to 5 PM.Average response time: 24h

How long does the glass sealant last?

Depending on driving performance and wiper usage3–6 months.
In Switzerland – with its high levels of rain, snow, and road salt – aRefresher courses 2-3 times per year
You'll see it immediately: when the water no longer beads up, it's time for a new coat.

Can I also apply the sealant to the side and rear windows?

Yes, absolutely! Especially onside windows and mirrorsThe beading effect works perfectly.
For thewindshieldPlease apply sparingly to avoid wiper flutter.

How can I avoid streaks when cleaning glass?

Important:Never in direct sunlightclean.

The21CARS® Glass CleanerApply sparingly and with theWaffle microfiber clothwipe it down.
If you have hard water (e.g., Zurich or Bern), use distilled water for the final polish – this prevents limescale stains.

Can I use the glass cleaner inside the car?

Yes, of course – he issilicone-free and safe for indoor surfaces.

Ideal for navigation displays, rearview mirrors and glass roofs.
Simply apply sparingly and wipe with a second, dry cloth.

What is the difference between glass cleaner and sealant?

TheGlass cleanerRemoves dirt, grease and deposits.

ThesealingIt lays down a water-repellent layer – so it's cleaning plus protection.

For best results, use in combination for long-lasting clarity and less cleaning effort.