SONAX XTREME Ceramic ScheibenKlar "2 in 1" Glass Cleaner with Sealant 750ml

Clean and seal your glass streak-free — with the SONAX XTREME Ceramic ScheibenKlar 2 in 1

What does the SONAX XTREME Ceramic ScheibenKlar 2 in 1 do? This glass cleaner with a built-in sealant effect cleans glass, mirrors and headlights streak-free and lays down a hydrophobic protective layer that makes rain bead off and improves your view in bad weather.

Clear glass isn't a cosmetic detail — it's a safety matter. Dirty, fogged-up or poorly beading windscreens increase glare from oncoming traffic and cut your reaction time. The SONAX XTREME Ceramic ScheibenKlar 2 in 1 handles two jobs in one step: it cleans your glass, mirrors and headlights streak-free and at the same time lays down a hydrophobic ceramic protective layer that makes raindrops bead off in beads. The result: less dirt build-up, a better view in rain and snow and longer-lasting wiper blades — all from a single spray bottle.

• Streak-free cleaning in one step. The solvent-based formula quickly breaks down grease films, bug residue, bird droppings and road grime. Unlike plain household glass cleaners, the ScheibenKlar leaves no smears and no greasy film — the microfibre cloth picks up every bit of residue and the glass is clear and dry right away.
• Built-in sealant with a beading effect. The ceramic sealant component is worked into the glass surface as you rub it in. On the sealed glass, raindrops run off in small beads instead of clouding your view across the whole pane. The sealant lasts four to six weeks depending on the weather and how often you clean — and you just top it up with another application.
• Suitable for glass, mirrors and headlights. The ScheibenKlar 2 in 1 works on every glass surface on the car — windscreen, rear window, side windows, wing mirrors and polycarbonate headlights. It's also fine on tinted windows, since the formula won't attack the tint.

Detailing1's tip from the shop: Use the ScheibenKlar in two steps. First clean the glass with the damp microfibre cloth and pull off all the dirt completely. Then take a second, dry SONAX microfibre cloth and work the product in until the glass shows an even, streak-free shine. The two-step approach separates the cleaning phase from the sealing phase and spreads the sealant component more evenly over a genuinely clean surface.

2-in-1 glass cleaning and sealing — how the ScheibenKlar works in one step

The SONAX XTREME Ceramic ScheibenKlar 2 in 1 combines two active groups in one formula. The first is an isopropanol-based glass cleaner that chemically breaks down grease films, oily soiling and residue from bugs, bird droppings and road grime and lifts it off with the cloth. Isopropanol is a proven glass cleaner that leaves no smears and flashes off glass fast — the result is instant, clear shine with no second wipe needed.

The second component is the sealant substance that builds the hydrophobic protective layer. It works hand in hand with the cleaning component: as you rub it in with the dry microfibre cloth, the sealant is worked evenly into the glass surface. Glass looks smooth to the eye, but under the microscope it's a porous, slightly roughened surface. The sealant molecules fill those micro-pores and create an even, hydrophobic layer where water no longer clings in flat sheets but pulls into beads and runs off in the airflow as you drive.

How long the sealant lasts depends on a few things: how often you wash the glass, how harsh the weather is and how good your wiper blades are. With the wipers running daily and heavy spells of rain, the sealant can start to fade after four weeks. In dry periods with little wiper use, it often goes the full six weeks and longer. Topping it up couldn't be simpler: reapply the ScheibenKlar, rub it in — the protective layer is back straight away.

One important part of the formula is that it gets on with tinted windows. Plenty of older glass cleaners with aggressive solvents can attack the tint, especially on glass with an inner tint (colour films rather than laminated glass). The ScheibenKlar formula is explicitly cleared for tinted windows, which makes it a safe all-rounder for every window on the car.

The formula contains no silicones, which is a real plus on a glass cleaner with a sealant component. Silicone-based products on glass build up deposits over time that hurt how the wiper blades clear water and are hard to remove completely at the next wash. The silicone- and hard-wax-free sealant component of the ScheibenKlar bonds permanently to the glass without permanently changing the surface — it just protects it. That makes the product a good fit for regular users too, who don't want to risk any build-up.

Using the ScheibenKlar 2 in 1 properly — step by step for streak-free glass

Give the bottle a quick shake before use. Spray the product onto the outer glass — not onto hot glass in direct sun, or it dries too fast and leaves residue behind. Work in the shade if you can, or in the cooler morning hours.

Grab a lint-free SONAX microfibre cloth for glass and interior and wipe the dirt off the glass with the damp product. The cloth pulls up grease film, bug residue and dust particles. Then take a second, dry microfibre cloth and work the product into the glass in circles until you get an even, streak-free shine. Wipe off any residue that lands on the paint right away with a dry cloth — the product isn't meant for paint and can leave deposits if it sits too long.

Don't use the ScheibenKlar 2 in 1 inside the cabin. The hydrophobic effect on inner glass surfaces can actually make the glass fog up faster, since moisture no longer spreads evenly across the surface but beads up instead. For the inside of the glass there's the regular XTREME ScheibenKlar without the sealant component.

Cleaning the wing mirrors follows the same principle: spray the product on, clean with the damp cloth, work it in with the dry cloth. On polycarbonate headlights, go easy on the pressure when rubbing in — the material is more delicate than glass and reacts to too much friction with micro-scratches.

On heavily soiled glass — for example after a long stand, a tunnel run or an intense bug season — it's worth running the first cleaning pass with a dedicated cleaner or a pre-wash before you apply the ScheibenKlar. Coarse dirt or bug residue glued down under a layer of road film needs a mechanical loosening first, so the ScheibenKlar can deliver its sealing performance on a genuinely clean surface. The pre-wash only costs an extra minute — but the quality of the final seal is noticeably better.

Clear view in rain and snow — what the sealant delivers day-to-day

The biggest everyday effect of the ScheibenKlar 2 in 1 shows up in the rain. On an unsealed pane, rainwater spreads in a thin film that clouds your view through light refraction and causes intense glare with oncoming traffic. On the sealed glass, rainwater pulls into small beads that run off on their own in the airflow at higher speeds — from around 60–80 km/h. Your field of view stays clearer and you reach for the wipers less often.

At lower speeds and standing still the sealant helps too: the layer cuts down how much bug residue, bird droppings and road grime stick. These substances cling less to the hydrophobic surface and come off more easily at the next clean. That matters most in summer, when bugs hit the windscreen hard and are tough to shift.

In winter the sealant reduces how much ice sticks to the glass. Ice clings less to a hydrophobic surface, sits thinner and comes off more easily with the scraper. The ScheibenKlar 2 in 1 isn't a full de-icing product — but it makes scraping clear far less of a chore than on an unsealed pane.

It shows its strength in fog and morning frost too: on sealed glass, frost settles less evenly. Instead of a flat, firmly clinging layer of frost you often get only thin crystal patterns that come off with the squeegee or scraper in a few passes. Anyone who has to scrape the car clear early every morning will really feel the difference after the first winter season with the ScheibenKlar — especially next to cars whose glass has no protective seal at all.

For wiper blades the sealant has a welcome side effect: clean, well-beading glass cuts the friction of the blades on the surface. Wiper blades on unsealed glass with a grease film push dirt back and forth instead of clearing it — that speeds up wear on the rubber. On the sealed glass the blades glide more evenly, clear water better and last longer.

In practice that means: wiper blades that squeak and smear after just one season on an unsealed pane often run two or three seasons trouble-free on glass kept up regularly with the ScheibenKlar. The savings on wiper blades is an indirect but measurable benefit of regular glass sealing — one that quickly offsets the cost of the product.

Glass cleaners compared — ScheibenKlar 2-in-1, ScheibenKlar Classic and PROFILINE GlassPolish

The SONAX range has several products for glass cleaning and care. The XTREME ScheibenKlar (without 2-in-1) is the classic glass cleaner with no sealant component. It's faster to use, because there's no second rub-in step, but it gives no lasting beading effect. For interior glass, where a seal would be counterproductive, it's the right call. For outer glass, where you want the sealing effect, the 2-in-1 is the better choice.

For heavily scratched glass or baked-on contamination a normal glass cleaner won't shift, there's the PROFILINE GlassPolish — a glass polish with cerium oxide that removes the finest scratches from glass surfaces with a machine or by hand. That's a more intensive prep step you can run before sealing with the ScheibenKlar 2 in 1 to create a flawless starting point.

For maximum, long-term glass sealing there's the PROFILINE CeramicCoating CC Glass — a professional ceramic coating for glass that stands up for up to 12 months. It's more involved to prep and apply but offers far longer durability. The ScheibenKlar 2 in 1 is the everyday product for regular care; the CC Glass is for the intensive base treatment or for cars where you want minimal upkeep over months.

An often underrated point when comparing the three is the barrier to entry. The PROFILINE CC Glass needs full glass prep — polishing, cleaning, isopropanol degreasing — before the ceramic coating can go on. Mistakes in the prep lead to uneven bonding or staining that's nearly impossible to fix afterwards. The ScheibenKlar 2 in 1, by contrast, forgives mistakes: if the glass wasn't perfectly prepped, the seal loses a little durability in that spot — but no permanent damage is done. For private users who want clear glass with no learning curve, the ScheibenKlar 2 in 1 is the right way into glass sealing.

Buying a glass cleaner — who the SONAX XTREME Ceramic ScheibenKlar 2 in 1 is for

The SONAX XTREME Ceramic ScheibenKlar 2 in 1 is for car owners who want to clean their glass regularly and at the same time build a lasting beading effect for a better view and easier cleaning. The 2-in-1 concept makes it especially appealing for anyone who wants to keep the work low — one product for cleaning and protection instead of two separate steps.

The ScheibenKlar 2 in 1 is especially worth it for drivers who are often out in the rain or want to improve safety on wet roads. The better view through beading glass is a real plus on night drives in the rain, raising your confidence behind the wheel. Reapplying every four to six weeks is enough to keep the effect going for good.

It's also a smart fix for drivers who rarely wash or have little time for care. Unlike dedicated glass sealants that have to be planned in as a separate step after a full clean, the ScheibenKlar 2 in 1 slots neatly into the normal cleaning routine. Once a month, when you're cleaning the car, wipe the glass down with the ScheibenKlar — that's enough to keep clear, hydrophobic glass all the time. No switching over, no second bottle, no extra time. That's the real promise of the 2-in-1 concept: maximum everyday practicality with minimum effort.

For cars with polycarbonate headlights clouded by UV exposure, the ScheibenKlar 2 in 1 offers a simple maintenance fix for the surface — it cleans and protects the headlights without involved polishing. Used as a finishing-touch product after a full car wash, it's fast to apply and delivers reliable results that improve both the look and the safety of the car.

Once you've seen the difference between unsealed and sealed glass on a drive in the rain, you'll make the ScheibenKlar 2 in 1 a fixed part of your care routine — not because it's a luxury product, but because it delivers real, measurable value day-to-day. Clear glass isn't a luxury. It's the basis of safe driving in any weather. The effort is minimal, the result instant — and with 750 ml in the bottle, one bottle lasts many months of regular use across all the glass surfaces on the car.