{"title":"XTREME Glass Cleaner — SONAX","description":"\u003ch2\u003eStreak-Free Windows with Sealing Option — SONAX XTREME Glass Cleaner\u003c\/h2\u003e\n\n\u003cblockquote\u003e\n  \u003cp\u003e\u003cem\u003eWhat differentiates SONAX XTREME Glass Cleaners from regular window cleaners? The XTREME line combines Pure-Water technology for residue-free clarity with an optional ceramic sealant that repels water for up to six weeks — cleaning and protection in one series.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp\u003eAnyone who has ever been frustrated by milky streaks after cleaning their windows knows: a good \u003cstrong\u003eSONAX XTREME Glass Cleaner\u003c\/strong\u003e makes the difference between \"clean\" and \"invisible.\" The windshield is the most heavily used glass surface on a vehicle — insects, road dust, pollen, oil mist from the road, nicotine film from the inside. All of this accumulates in layers and gradually reduces your visibility until you suddenly see almost nothing when the sun is low or facing oncoming traffic. The XTREME glass cleaning line from SONAX goes beyond mere cleaning and offers a well-thought-out two-product system for every requirement.\u003c\/p\u003e\n\n\u003cp\u003eWith the classic \u003ca href=\"\/en\/products\/sonax-xtreme-scheibenklar-glasreiniger\"\u003eXTREME ScheibenKlar\u003c\/a\u003e, you get a specialist for streak-free clarity on all glass surfaces — inside and out, on the car and in the home. The alcohol-based cleaner with Pure-Water technology dissolves even stubborn dirt like nicotine film and baked-on insect residue, without leaving any residue. If you also want a hydrophobic protective layer on the exterior windows, opt for the \u003ca href=\"\/en\/products\/sonax-xtreme-ceramic-scheibenklar-2-in-1-glasreiniger-versiegelung\"\u003eXTREME Ceramic ScheibenKlar 2in1\u003c\/a\u003e, which combines cleaning and ceramic sealing in a single step — no separate sealing product, no additional waiting times. Both products share SONAX's typical quality philosophy: no oil residues, no wax films, only crystal-clear results. And both are formulated not to attack windshield wiper blades and rain sensors — a detail that is not a given with cheaper glass cleaners.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePure-Water technology for residue-free cleanliness.\u003c\/strong\u003e The formulation of the classic ScheibenKlar improves the wetting of the glass surface and evaporates in a controlled manner — not too fast, not too slow. Special ingredients actively reduce re-soiling, so your window stays clean longer between cleanings. This works just as reliably on windshields as on side windows, mirrors, and even household glass.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCeramic sealing with a real beading effect.\u003c\/strong\u003e The 2in1 variant goes a step further: when massaged in, a wafer-thin ceramic layer forms, actively repelling water. Tests show no difference to dedicated glass sealants — even after several windshield wiper cycles, the lotus effect remains stable. The realistic durability is four to six weeks, depending on weather and driving performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo products, one system.\u003c\/strong\u003e This is the decisive advantage of the XTREME line: You don't have to choose between cleaner and sealant, but can combine both. In everyday use, you use the classic ScheibenKlar for regular cleaning; every six to eight weeks, you renew the protective layer with the ceramic variant. This way, you have consistently clean, protected windows without double the effort.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003ePractical Tip from Detailing1:\u003c\/strong\u003e The most common mistake with glass cleaners is using the wrong cloth. Cotton and paper towels leave lint that appears as white streaks. Use only lint-free microfiber cloths — and wash them without fabric softener, which destroys the fiber structure. Work with two cloths: one for application and wiping, a dry one for immediate polishing. The difference is dramatic.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003ePure-Water Technology and Ceramic Coating — How XTREME Glass Cleaners Work\u003c\/h3\u003e\n\n\u003cp\u003eWhat makes a good \u003cstrong\u003eglass cleaner for car windows\u003c\/strong\u003e, and why do so many products fail to deliver streak-free results? The answer lies in the evaporation rate and composition. Cheap glass cleaners often contain oils or waxes as carriers. While these dissolve dirt, they leave an invisible film on the window that becomes visible as a milky haze during the next rain or windshield wiper use. This is particularly treacherous: immediately after cleaning, the window looks perfect, and only hours or days later does the problem become apparent. The glass surface of a vehicle is more finely ground than household glass and reacts more sensitively to residues — what works on a bathroom mirror is often not good enough for the windshield.\u003c\/p\u003e\n\n\u003cp\u003eSONAX takes a different approach with XTREME ScheibenKlar: The base is highly refined alcohol and specialized surfactants — no fats, no fillers. The so-called Pure-Water technology optimizes the wetting of the glass surface, so the cleaner spreads evenly instead of forming droplets that dry unevenly. The result is controlled evaporation: not too fast, so you have enough time to wipe, and not too slow, so no streaks form due to slow drying. In addition, the XTREME formulations contain active ingredients that actively reduce re-soiling. In practice, this means: your window stays noticeably cleaner for longer after cleaning than with conventional glass cleaners, because dust and pollen adhere less to the treated surface.\u003c\/p\u003e\n\n\u003cp\u003eThe Ceramic variant complements this cleaning performance with nano-silica particles. These microscopic particles combine with the glass surface during drying to form an extremely smooth layer. This layer has two measurable effects: First, water beads off immediately — at speeds of about 60 km\/h and above, raindrops literally fly off the window without you having to use the windshield wipers. This dramatically improves visibility in the rain and reduces windshield wiper frequency, which in turn extends the lifespan of your wiper blades. Second, dirt adheres less because the smooth surface offers less surface area for adhesion. Insect residues, pollen, and road dust are much easier to remove during the next cleaning; often, a damp cloth without cleaner is enough.\u003c\/p\u003e\n\n\u003cp\u003eWhat differentiates Ceramic ScheibenKlar from pure glass sealants like Soft99 Glaco or similar products: You don't have to do any elaborate preparation, observe any waiting times, or pre-treat with a separate glass cleaning polish. Spray on, massage in, done. Dedicated glass sealants do last longer — sometimes six to twelve months — but they require a clean, grease-free surface and often multi-stage application. Ceramic ScheibenKlar 2in1 positions itself as the pragmatic alternative: less durability, but zero preparation effort and renewable with every cleaning. For the weekend detailer who doesn't need two different products and steps, this is the smarter and more time-saving solution. However, if you are looking for a sealant with maximum durability and are willing to accept the higher effort, a dedicated glass sealant may be the better choice — ideally then with the classic XTREME ScheibenKlar as a preparatory cleaning.\u003c\/p\u003e\n\n\u003ch3\u003eStep-by-Step Application — How to Get the Most Out of Both Products\u003c\/h3\u003e\n\n\u003cp\u003eThe process is deliberately kept identical so you don't have to switch between two routines. First, remove coarse dirt with a damp microfiber cloth without cleaner — this prevents you from spreading insect residues or sand particles across the window and causing micro-scratches. This preparation step takes 30 seconds and saves you time in the end, because you'll have less rework during the actual cleaning. Then, spray the \u003cstrong\u003ewindow cleaner\u003c\/strong\u003e thinly and evenly onto the glass surface. Let the product soak in for five to ten seconds, or up to 20 seconds for stubborn insect residues. Distribute the cleaner with the damp side of your microfiber cloth in vertical or circular motions — horizontal streaks become visible in backlight and follow the natural line of sight while driving, which makes them particularly annoying. Immediately after, polish with the dry side or a second cloth. This immediate dry wiping is the crucial step that most people skip — and this is exactly where the streaks everyone complains about originate. One more detail about temperature: Avoid cleaning windows in direct sunlight or when the glass surface is hot. On a hot window, even XTREME ScheibenKlar evaporates too quickly, and you lose the time advantage of controlled evaporation. Ideally, you should work in the shade or in the garage — this applies to glass cleaners as well as polishes and sealants. Early morning or late afternoon are optimal time windows, especially in mid-summer.\u003c\/p\u003e\n\n\u003cp\u003eWith Ceramic ScheibenKlar 2in1, there's an important limitation you need to know: Use it only on the outside of the window. The hydrophobic effect of the ceramic layer can lead to fogging on the inside, because moisture no longer condenses evenly, but remains in small droplets. This is not a product defect, but is inherent in any water-repellent coating — even dedicated glass sealants have this problem. Therefore, for the inside window, use the classic ScheibenKlar without ceramic additive — it's optimized precisely for this: film, fingerprints, and nicotine residues disappear without leaving any residue, without a water-repellent layer impairing fog-free vision.\u003c\/p\u003e\n\n\u003cp\u003eAnother practical tip that becomes relevant in winter: windshield washer fluid with antifreeze contains alcohols and glycols, which gradually wear down the ceramic sealant with each wipe. This is unavoidable and no reason to forgo the sealant — you just need to adjust the renewal cycles. In winter, renew the ceramic layer every four weeks instead of six. In summer, when you use frost-free washer fluid, the sealant easily lasts six weeks and even eight weeks for infrequent drivers. The 750 ml bottle is enough for numerous applications, so shorter winter cycles only marginally increase consumption.\u003c\/p\u003e\n\n\u003ch3\u003eStreak-Free Windows — Why Streaks Occur and How to Permanently Avoid Them\u003c\/h3\u003e\n\n\u003cp\u003eStreaks on the windshield are not just an optical nuisance — they can dangerously impair visibility in oncoming light and low sun. The problem is widespread: In detailing forums, \"How do I get my window streak-free?\" is one of the most common questions. The cause is almost never the window itself, but a combination of three factors — wrong product, wrong cloth, and wrong technique. Oil and wax-containing cleaners leave an invisible film that only becomes visible as a milky haze during the next rain or windshield wiper use. Particularly insidious: Immediately after cleaning, the window looks perfect, and only hours or days later does the problem appear. Cotton towels and paper towels fray and distribute lint that combines with the damp cleaner to form whitish streaks. And horizontal wiping follows the line of sight while driving, so streaks in the field of vision cause maximum disturbance.\u003c\/p\u003e\n\n\u003cp\u003eXTREME ScheibenKlar addresses the first factor with its alcohol-based, oil-free formulation. The controlled evaporation rate gives you enough time to wipe without the cleaner drying before polishing — a common problem with cheap glass cleaners that dry within seconds in the summer sun and are then barely wipeable. You have to solve the second factor — the cloth — yourself. Invest in high-quality, lint-free microfiber cloths specifically for glass. Normal polishing cloths are too soft and too fluffy; glass cloths have a tighter weave that absorbs moisture instead of smearing. The difference is immediately visible and palpable: a glass cloth glides over the window, while a polishing cloth sticks and smears.\u003c\/p\u003e\n\n\u003cp\u003eWash your glass cloths regularly at a maximum of 40 degrees without fabric softener — fabric softener seals the fibers and makes the cloth useless within a few washes. A cloth that feels \"soft\" is paradoxically bad for glass because the fabric softener coating no longer absorbs water and cleaner, but spreads it across the window. Air dry the cloths or tumble dry them on a low setting. With the right combination of XTREME ScheibenKlar and a clean, uncoated glass cloth, you will achieve results that no household cleaner can provide — crystal-clear, absolutely streak-free windows that do not impair visibility even in low sun.\u003c\/p\u003e\n\n\u003ch3\u003eXTREME ScheibenKlar vs. PROFILINE Glass Cleaner — Which SONAX Line for Which Application?\u003c\/h3\u003e\n\n\u003cp\u003eIn addition to the XTREME line, SONAX also offers professional glass cleaners in the PROFILINE series. The question arises: When is XTREME sufficient, and when do you need PROFILINE? The answer depends on your application scenario. The \u003ca href=\"\/en\/products\/sonax-profiline-glasscleaner-glasreiniger\"\u003ePROFILINE GlassCleaner\u003c\/a\u003e is a concentrate developed for continuous commercial use in detailing businesses — high yield, strong cleaning performance, but without the convenience of a spray bottle. The \u003ca href=\"\/en\/products\/sonax-profiline-glass-detailer-concentrate-glasreinigerkonzentrat\"\u003ePROFILINE Glass Detailer Concentrate\u003c\/a\u003e goes a step further and is also suitable as a clay lube substitute for paint decontamination.\u003c\/p\u003e\n\n\u003cp\u003eThe XTREME line, on the other hand, is designed for user-friendly application on vehicles — pre-mixed, with a spray head, ready for immediate use. For the private detailer and enthusiast who maintains their car on weekends, XTREME is the better choice. You don't need to calculate mixing ratios, fill spray bottles, and the results are on par with PROFILINE products. The ceramic advantage of the 2in1 variant is even a unique selling point that the PROFILINE line does not offer in this form. However, if you clean windows daily in a workshop, the per-liter price of PROFILINE concentrates is significantly lower — this only pays off with professional use.\u003c\/p\u003e\n\n\u003cp\u003eOutside the SONAX universe, products like Koch-Chemie Glass Cleaner or Soft99 Glaco are comparison options. The Koch-Chemie Glass Cleaner is a solid cleaner without sealing function, but it scores with an extremely economical concentrate formulation. The Soft99 Glaco is the opposite: a pure glass sealant without cleaning function, which lasts up to six months and can only be applied after thorough glass cleaning and degreasing. The SONAX XTREME Ceramic ScheibenKlar 2in1 deliberately positions itself in between — less specialized, but significantly more practical in everyday use, because cleaning and sealing are done in a single step. For the weekend detailer who doesn't need two different products and steps, this is the smarter and more time-saving solution. However, for those looking for a sealant with maximum durability and willing to accept the higher effort, a dedicated glass sealant may be the better choice — ideally then with the classic XTREME ScheibenKlar as a preparatory cleaning.\u003c\/p\u003e\n\n\u003ch3\u003eBuying SONAX XTREME Glass Cleaner — Which Variant Suits You and When Is What Worthwhile?\u003c\/h3\u003e\n\n\u003cp\u003eThe decision between the two XTREME glass cleaners is straightforward once you know your typical maintenance routine and what expectations you have for the durability of your results. If you are looking for a reliable, streak-free glass cleaner for regular interior and exterior cleaning, choose the \u003ca href=\"\/en\/products\/sonax-xtreme-scheibenklar-glasreiniger\"\u003eXTREME ScheibenKlar\u003c\/a\u003e in the 500ml bottle. It completely covers everyday needs, works on all glass surfaces, and can also be used in the household for windows and mirrors — so you no longer need a separate window cleaner. The formulation is so universal that it works on car glass, household glass, mirrors, and even on displays and screens without leaving streaks.\u003c\/p\u003e\n\n\u003cp\u003eIf you additionally want a water-repellent protective layer on your exterior windows — and you should, if you often drive in the rain or during the darker months — add the \u003ca href=\"\/en\/products\/sonax-xtreme-ceramic-scheibenklar-2-in-1-glasreiniger-versiegelung\"\u003eCeramic ScheibenKlar 2in1\u003c\/a\u003e. The beading effect not only improves visibility in wet conditions but also reduces the glare from oncoming traffic at night, because raindrops no longer act as light scatterers on the window. The combination of both products results in a complete glass cleaning system: ScheibenKlar for the weekly routine inside and out, Ceramic every six to eight weeks as a sealing refresh on the exterior windows. Anyone who only wants to buy a single product and can do without the sealant will find the classic ScheibenKlar sufficient for all requirements. Those who want maximum viewing comfort and ease of maintenance invest in both and have a system that consistently delivers excellent results for months.\u003c\/p\u003e\n\n\u003cp\u003eWhat you should not forget: Clean windows are only half the battle if your \u003ca href=\"\/en\/products\/sonax-xtreme-scheibenreiniger-1-100-wischwasser-konzentrat\"\u003ewasher fluid\u003c\/a\u003e doesn't play along. The XTREME ScheibenReiniger as a washer fluid concentrate ensures clear vision while driving and perfectly complements manual cleaning with ScheibenKlar. In summer, the \u003ca href=\"\/en\/products\/sonax-xtreme-scheibenreiniger-sommer-wischwasser-gebrauchsfertig\"\u003eready-to-use summer variant\u003c\/a\u003e is a practical alternative for the washer fluid reservoir. This way, you build a well-thought-out window care system from a single source — each product has its task, and together they cover every application.\u003c\/p\u003e\n\n\u003cp\u003eOne more honest note on storage and shelf life: Both XTREME glass cleaners must be protected from frost. Do not store the bottles in the car when temperatures drop below freezing point — the alcohol can precipitate in extreme cold and the active ingredients can separate. In summer, however, storage in the car is unproblematic. Opened bottles will last at least two to three years if stored properly. The 500 ml bottle of classic ScheibenKlar is sufficient for 20 to 30 window cleanings with average use — that's half a year of weekly cleaning. The 750 ml bottle of the ceramic variant lasts even longer because you only use it every six to eight weeks. In summary, both products are extremely economical, and the cost-benefit comparison clearly favors XTREME — cheaper products often use more material per cleaning process and deliver inferior results.\u003c\/p\u003e","products":[{"product_id":"sonax-xtreme-scheibenklar-glasreiniger","title":"XTREME ScheibenKlar Glass Cleaner","description":"\u003ch2\u003eStreak-free vision on any glass — SONAX XTREME ScheibenKlar in everyday use\u003c\/h2\u003e\n\n\u003cblockquote\u003e\n  \u003cp\u003e\u003cem\u003eWhat makes a good car glass cleaner? A good glass cleaner fully dissolves greasy film, tobacco residue and smear marks without leaving residue of its own — the basic requirement for clear vision and judder-free wiping on the move.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp\u003eHazy windows and smeary wiper blades are one of the most common complaints inside a car — and the cause is almost always the same enemy: greasy film. Silicone-based care products, dashboard dressings, cigarette smoke and the skin oils from touching the glass build up an invisible film that scatters light in bright sun or at night and cuts down your vision. The \u003cstrong\u003eSONAX XTREME ScheibenKlar\u003c\/strong\u003e is a glass cleaner built specifically for car windows, in a 500 ml spray bottle, that pulls greasy film, smears and deposits off the glass reliably and leaves nothing behind.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrease-cutting formula for streak-free cleaning inside and out.\u003c\/strong\u003e ScheibenKlar runs a dedicated formulation that chemically breaks down greasy film, silicone residue and tobacco deposits and lifts them off completely. On the inside of the glass as well as the outside you get a clear, streak-free surface that throws no glare patches in direct sun.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast drying with no washer-fluid residue.\u003c\/strong\u003e The formula dries quickly with no limescale spots or chemical residue that could get in the way of anything you apply next. That makes ScheibenKlar a solid prep step before a glass sealant, since the surface is clean and dry the moment you finish.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e500 ml format for regular use in everyday driving.\u003c\/strong\u003e The handy spray bottle is ideal for keeping your own car's windows clear or for professional use in valeting and detailing. The 500 ml fill lasts for plenty of cleaning rounds, so you get an economical yet regular routine without the hassle of constantly restocking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDetailing1's tip from the shop:\u003c\/strong\u003e The most common mistake with glass cleaning is using the same cloth for the inside and the outside of the window. Always keep separate microfibre cloths — one for the inside, one for the outside. Spray the cloth, not the glass directly, so you don't overspray onto the dashboard or paint. On the inside, wipe in diagonal passes so any streaks show up straight away and you can go back over them on the spot.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eGreasy film and tobacco deposits on glass — the chemistry behind it, and why a household cleaner won't cut it\u003c\/h3\u003e\n\n\u003cp\u003eThe greasy film on the inside of car windows comes from a mix of sources: outgassing from plastic and leather parts in the cabin, silicone-based dashboard dressings, tobacco smoke, and skin oils from touching the glass as you get in and out. This invisible film holds organic fats and siloxanes that bond firmly to the glass and can't be shifted by water alone, because grease is hydrophobic and water simply won't pick it up.\u003c\/p\u003e\n\n\u003cp\u003eHousehold glass cleaners are often only half-suited to cleaning car windows. Many of them contain ammonia or other chemicals that can damage painted or leather surfaces if you hold the bottle too close or the product spits onto surfaces that aren't built for those chemicals. On top of that, a lot of all-purpose cleaners leave limescale residue that shows up on the glass as it dries. An automotive glass cleaner like ScheibenKlar is tuned to what a car window actually needs.\u003c\/p\u003e\n\n\u003cp\u003eThe season makes a noticeable difference to how much cleaning you need, too. In summer, insect residue and baked-on road spray on the windscreen are the biggest challenge; in winter you add de-icer residue and salt mist that dry on at the bottom edge of the glass and leave a stubborn white film. ScheibenKlar works all year round and handles both scenarios — the formula breaks down organic residue and mineral deposits alike, so you don't need a separate summer and winter product.\u003c\/p\u003e\n\n\u003cp\u003eOne more critical point concerns cars with tinted windows. Cheap glass cleaners with overly aggressive solvents can damage filmed windows or factory tint by softening the film. The \u003ca href=\"\/en\/products\/sonax-xtreme-scheibenklar-glasreiniger\"\u003eSONAX XTREME ScheibenKlar\u003c\/a\u003e is designed to be compatible with automotive glass, tinted windows included. The formula is gentle on window film and tint while still cleaning effectively.\u003c\/p\u003e\n\n\u003cp\u003eA suitable glass cleaner matters for motorhomes, caravans and boats as well: acrylic and polycarbonate glazing, the kind you find in these vehicles, is more sensitive to solvent-based cleaners than classic toughened glass. For surfaces like that, go for a glass cleaner that's rated as compatible with plastic glazing. If you're not sure whether ScheibenKlar suits a particular glazing type, test it first on a small, out-of-the-way spot.\u003c\/p\u003e\n\n\u003ch3\u003eWhere to use it in the car — windscreen, interior cleaning and prep for a glass sealant\u003c\/h3\u003e\n\n\u003cp\u003eThe main job for ScheibenKlar is cleaning the inside of the windscreen and the side windows. These surfaces collect the most greasy film, since they're the most exposed to outgassing from the cabin. Regular cleaning — at least once a month, or whenever your vision is noticeably affected, is the rule of thumb — keeps the glass clear and cuts down the smearing you get when the washer system spreads fluid across already greasy glass instead of clearing it.\u003c\/p\u003e\n\n\u003cp\u003eOn the outside of the windscreen, ScheibenKlar is ideal for getting rid of insect residue, dirt spray and the wiper smears that rubber blades leave on dirty glass. A thorough outside clean of the windscreen makes real sense heading into the winter months, to give de-icers and glass sealants the best possible grip. Clean glass takes a sealant like the \u003ca href=\"\/en\/products\/sonax-xtreme-ceramic-scheibenklar-2-in-1-glasreiniger-versiegelung\"\u003eXTREME Ceramic ScheibenKlar \"2 in 1\"\u003c\/a\u003e far better than a grease-hazed surface ever will.\u003c\/p\u003e\n\n\u003cp\u003eIn professional detailing, ScheibenKlar goes in as the pre-clean step before a glass sealant. Silicone-based glass sealants only bond properly to the glass when no greasy film is blocking the adhesion. A consistent pre-clean with ScheibenKlar makes sure the sealant reaches its full lifespan and the water beading runs evenly across the whole pane.\u003c\/p\u003e\n\n\u003cp\u003eAt dealerships and in valeting, glass cleaning is often one of the last and most telling steps before the car is handed back. A spotless windscreen with no greasy smears or streaking tells the customer at a glance that the work was done with care. Skimp on this final detail and you lose that — but get it right and you leave a lasting impression with a tool that genuinely does what it promises: crystal-clear, streak-free glass that reflects the quality of the whole job and stays in the customer's memory.\u003c\/p\u003e\n\n\u003ch3\u003eTechnique for a streak-free finish — what really matters in glass cleaning\u003c\/h3\u003e\n\n\u003cp\u003eTechnique is what decides the result in glass cleaning. Work the glass in two passes. First pass wet — spray ScheibenKlar onto a microfibre cloth, wet the surface evenly and let the cleaner do its work. Second pass dry — buff the glass off with a second, clean microfibre cloth in crossing strokes. This two-stage approach lifts the greasy film on the first pass and clears it completely on the second.\u003c\/p\u003e\n\n\u003cp\u003eWhen is the glass actually clean? A simple field test gives you the answer: look at the glass against the light, or at a shallow angle to the light source. Haze and grease residue show up straight away as a milky cloudiness that's often invisible head-on. Only once the glass looks evenly clear and transparent from every angle is the job done. This backlight check is the most reliable quality test for glass cleaning and is worth making routine at the end of every window clean.\u003c\/p\u003e\n\n\u003cp\u003eThe inside of the glass calls for one extra note: on big, steeply raked windscreens, cleaning the inside is awkward by design. A cleaning pad with an angled handle, or an extended reach tool that holds the microfibre cloth, makes the work easier in the corners your normal arm reach struggles with. Even, gentle pressure and deliberately overlapping diagonal strokes give you the most reliable result, and the backlight check shows you straight away and unmistakably whether any patches need going over again.\u003c\/p\u003e\n\n\u003cp\u003eA pro tip for the most stubborn kind of greasy film: if a faint haze is still there after two cleaning passes, an extra pass with an IPA-soaked cloth before the ScheibenKlar step can help. IPA cuts through particularly stubborn silicone residue that normal glass cleaners don't fully break down. After the IPA cloth, go over it again as usual with ScheibenKlar — and even years-deep grease comes off as crystal-clear glass with no streaks.\u003c\/p\u003e\n\n\u003cp\u003eOn heavily smeared glass with old, dried-on silicone residue, a second full cleaning pass may be needed. This state often builds up when no suitable glass cleaner has been used for a long time, or when silicone-based dressings like dashboard spray have spat onto the glass. Keep on top of the car regularly with ScheibenKlar and you avoid stubborn deposits forming in the first place, and save yourself those drawn-out multi-pass cleans.\u003c\/p\u003e\n\n\u003cp\u003eOne spot that often gets overlooked is the rear window with its heating elements. When you clean this glass, always wipe along the heating lines — horizontally — never across them. Too much friction across the lines can damage the bond of the printed-on elements on older or already weakened cars. With a well-soaked, soft microfibre cloth and gentle pressure along the lines, the rear window cleans up without a problem too.\u003c\/p\u003e\n\n\u003cp\u003ePicking the right cloth makes a big difference to the result as well. For glass cleaning, microfibre cloths with a short, smooth pile work best, since they leave no fibres behind and give you an even cleaning surface. Cloths with a long pile, the kind that suit drying off or laying down sealants, are less suited to glass — they leave more fibres on the cleaned surface and force an extra buffing step.\u003c\/p\u003e\n\n\u003ch3\u003eScheibenKlar vs. Ceramic ScheibenKlar vs. PROFILINE GlassCleaner — choosing the right glass-cleaning solution\u003c\/h3\u003e\n\n\u003cp\u003eWithin the SONAX glass cleaner range there are several options with different priorities. The XTREME ScheibenKlar is the all-round glass cleaner with no added sealing properties — it cleans reliably and leaves a clean surface that's ready for further care products. It's the right pick when the focus is purely on cleaning, or when a standalone glass sealant is going on next.\u003c\/p\u003e\n\n\u003cp\u003eIf you want to build up your glass-cleaning kit step by step and cost-effectively, you can start with ScheibenKlar as the base and add the Ceramic ScheibenKlar later as a handy upgrade for cars that regularly need a glass sealant. This combination — a pure cleaner for a thorough deep clean, a 2-in-1 product for the quick refresh — covers both scenarios and gives you maximum flexibility in day-to-day work without having to invest in an overly complex range.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003ca href=\"\/en\/products\/sonax-xtreme-ceramic-scheibenklar-2-in-1-glasreiniger-versiegelung\"\u003eXTREME Ceramic ScheibenKlar \"2 in 1\"\u003c\/a\u003e combines cleaning power with a ceramic seal in one step. For anyone who wants to save time and lay down a base seal on the glass at the same time, that's the more efficient option. The cleaning power is a touch less intense than the pure ScheibenKlar, since the formula is tuned for both jobs.\u003c\/p\u003e\n\n\u003cp\u003eFor pros with high glass-cleaning volume, the \u003ca href=\"\/en\/products\/sonax-profiline-glasscleaner-glasreiniger\"\u003ePROFILINE GlassCleaner (concentrate)\u003c\/a\u003e is the more economical alternative. You dilute the concentrate to the strength you want, which brings the cost per car right down. For outfits cleaning a lot of car windows every day, the concentrate is the more professional choice over the ready-to-use ScheibenKlar in the 500 ml spray bottle.\u003c\/p\u003e\n\n\u003ch3\u003eBuying advice — who the XTREME ScheibenKlar is the right pick for\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSONAX XTREME ScheibenKlar\u003c\/strong\u003e is the right pick for car owners and detailers after a reliable, all-round glass clean with no frills. The 500 ml format is ideal for the regular upkeep of one car or several, private or commercial, without needing the economics of a big pro container. If you value clear vision and want to keep haze and streaking out of your line of sight on the move, you've got a dependable tool here for the regular window routine. It's quick and easy to get the hang of — and the result shows the moment you drive into low sun or a night run.\u003c\/p\u003e\n\n\u003cp\u003eAs a verified SONAX stockist, Detailing1 carries ScheibenKlar in the range. If you want to run it as part of a full glass cleaning and care routine, Detailing1 also has every matching add-on from the SONAX line — from the pre-clean through to a long-lasting ceramic seal for car windows.\u003c\/p\u003e\n\n\u003cp\u003eFor fleet operations and outfits running a lot of cars, it's worth checking whether the concentrate format of the PROFILINE GlassCleaner works out cheaper than the ready-to-use product. Across regular use on several cars, the cost difference adds up fast. ScheibenKlar, on the other hand, is the ideal pick for businesses or private users who'd rather have a simple, ready-to-go product with no diluting.\u003c\/p\u003e\n\n\u003cp\u003eIn the end, picking the right glass cleaner comes down to how often you use it and the result you're after. If you clean your car rarely and want maximum simplicity, ScheibenKlar has you perfectly covered. If you professionally detail a lot of cars and want to optimise both cost and result, you can build the SONAX glass cleaner range as a system — with ScheibenKlar as the standard cleaner, the Ceramic ScheibenKlar for sealant upkeep, and the concentrate for high-volume work. As a verified SONAX stockist, Detailing1 is glad to advise on putting together the right glass-cleaning range for your particular business or use case.\u003c\/p\u003e","brand":"SONAX","offers":[{"title":"500ml","offer_id":49160878915919,"sku":"D1-SNX-02382410","price":7.78,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/Sonax-XTREME-ScheibenKlar-4.png?v=1721514350"},{"product_id":"sonax-xtreme-ceramic-scheibenklar-2-in-1-glasreiniger-versiegelung","title":"XTREME Ceramic Disc Clear \"2 in 1\" Glass Cleaner with Sealant","description":"\u003ch2\u003eClean and Seal Windows Streak-Free — with SONAX XTREME Ceramic ScheibenKlar 2 in 1\u003c\/h2\u003e\n\n\u003cblockquote\u003e\n  \u003cp\u003e\u003cem\u003eWhat does SONAX XTREME Ceramic ScheibenKlar 2 in 1 do? This glass cleaner with an integrated sealing effect cleans windows, mirrors, and headlights streak-free and applies a hydrophobic protective layer that repels rain and improves visibility in bad weather.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp\u003eClear windows are not just an aesthetic detail — they are safety-critical. Dirty, fogged, or poorly repelling windscreens increase glare from oncoming traffic and reduce reaction time. The \u003cstrong\u003eSONAX XTREME Ceramic ScheibenKlar 2 in 1\u003c\/strong\u003e tackles two tasks in one step: it cleans vehicle windows, mirrors, and headlights streak-free, while simultaneously applying a hydrophobic ceramic protective layer that causes raindrops to bead up. The result: less dirt accumulation, better visibility in rain and snow, and extended wiper blade lifespan — all from a single spray bottle.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStreak-free cleaning in one step.\u003c\/strong\u003e The solvent-based formula quickly dissolves grease films, insect residue, bird droppings, and road grime. Unlike simple household glass cleaners, ScheibenKlar leaves no streaks or grease film — the microfiber cloth completely absorbs all residue, and the window is instantly clear and dry.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated sealing with beading effect.\u003c\/strong\u003e The ceramic sealing component is worked into the window surface during application. On the sealed window, raindrops run off in small beads instead of broadly obscuring visibility. The seal lasts four to six weeks, depending on weather and cleaning frequency — and can be easily refreshed by reapplying.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuitable for windows, mirrors, and headlights.\u003c\/strong\u003e ScheibenKlar 2 in 1 works on all glass surfaces of the vehicle — windshield, rear window, side windows, side mirrors, and polycarbonate headlights. It is also suitable for tinted windows, as the formula does not attack the tint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003ePractical Tip from Detailing1:\u003c\/strong\u003e It is best to apply ScheibenKlar in two steps: First, clean the window with a damp microfiber cloth and completely remove dirt. Then, with a second, dry SONAX microfiber cloth, buff the product until the window shows an even, streak-free shine. This two-step process separates the cleaning phase from the sealing phase and ensures a more even distribution of the sealing component on a truly clean surface.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e2-in-1 Glass Cleaning and Sealing — How ScheibenKlar Works in One Step\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSONAX XTREME Ceramic ScheibenKlar 2 in 1\u003c\/strong\u003e combines two active ingredient groups in one formulation. The first component is an isopropanol-based glass cleaner that chemically dissolves grease films, oily dirt, and residues from insects, bird droppings, and road grime, which are then picked up by the cloth. Isopropanol is a proven glass cleaner that leaves no streaks and evaporates quickly on glass — the result is instant, clear shine without re-wiping.\u003c\/p\u003e\n\n\u003cp\u003eThe second component is the sealing substance, which builds the hydrophobic protective layer. It works synergistically with the cleaning component: when buffed with a dry microfiber cloth, the sealing substance is evenly worked into the glass surface. Glass is macroscopically smooth, but under a microscope, it has a porous, slightly roughened surface. The sealing molecules fill these micropores and create an even, hydrophobic layer on which water no longer adheres in flat layers but contracts into beads and runs off due to air pressure while driving.\u003c\/p\u003e\n\n\u003cp\u003eThe durability of the seal depends on several factors: frequency of window washing, intensity of weather, and quality of wiper blades. With daily use of windshield wipers and intense rain periods, the seal may diminish after four weeks. In dry periods with little wiper use, it often lasts the full six weeks or longer. Refreshing is very simple: apply ScheibenKlar again, buff — the protective layer is immediately restored.\u003c\/p\u003e\n\n\u003cp\u003eAn important aspect of the formula is its compatibility with tinted windows. Many older glass cleaners with aggressive solvents can attack the tint, especially on windows with internal tinting (color films instead of laminated glass). The ScheibenKlar formulation is explicitly approved for tinted windows, making it a safe all-rounder for all vehicle windows.\u003c\/p\u003e\n\n\u003cp\u003eThe formulation contains no silicones, which is a decisive advantage for a glass cleaner with a sealing component. Silicone-containing products on windows can lead to long-term deposits that negatively affect the beading behavior of the wiper blades and are difficult to remove completely during the next car wash. The silicone and hard wax-free sealing component of ScheibenKlar permanently binds to the glass without permanently altering the window surface — it merely protects it. This also makes the product suitable for regular users who do not want to risk deposits.\u003c\/p\u003e\n\n\u003ch3\u003eApplying ScheibenKlar 2 in 1 Correctly — Step-by-Step for Streak-Free Windows\u003c\/h3\u003e\n\n\u003cp\u003eShake the bottle briefly before use. Spray the product on the exterior window — not on hot glass in direct sunlight, as the product will dry too quickly and leave residues. Preferably work in the shade or during cooler morning hours.\u003c\/p\u003e\n\n\u003cp\u003eTake a lint-free SONAX microfiber cloth for windows and interiors and wipe the dirt from the window with the damp product. The cloth picks up grease film, insect residue, and dust particles. Then take a second, dry microfiber cloth and buff the product in a circular motion into the window surface until an even, streak-free shine appears. Immediately wipe off any residues that land on the vehicle's paint with a dry cloth — the product is not intended for paint and can leave deposits if left on for too long.\u003c\/p\u003e\n\n\u003cp\u003eDo not use ScheibenKlar 2 in 1 inside the vehicle. The hydrophobic effect on interior window surfaces can cause the window to fog up more quickly, as moisture is no longer evenly distributed over the surface but beads up. For the interior window, there is the regular XTREME ScheibenKlar without a sealing component.\u003c\/p\u003e\n\n\u003cp\u003eCleaning the side mirrors follows the same principle: spray product, clean with a damp cloth, buff with a dry cloth. On polycarbonate headlights, light pressure is recommended when buffing — the material is more sensitive than glass and reacts to too much friction with micro-damage.\u003c\/p\u003e\n\n\u003cp\u003eFor heavily soiled windows — for example, after a long period of standing, after a tunnel drive, or after an intense insect season — it is recommended to perform the first cleaning round with a dedicated interior cleaner or a pre-wash before applying ScheibenKlar. Coarse dirt or insect residues that are stuck by a layer of road film first need mechanical dissolution so that ScheibenKlar can develop its sealing performance on a truly clean surface. Pre-washing only takes an extra minute — but the quality of the final seal is significantly better.\u003c\/p\u003e\n\n\u003ch3\u003eClear Visibility in Rain and Snow — What the Seal Achieves in Everyday Use\u003c\/h3\u003e\n\n\u003cp\u003eThe biggest everyday effect of ScheibenKlar 2 in 1 is evident in rain. On an unsealed window, rainwater spreads in a thin layer, which obscures visibility through light refraction and leads to intense glare from oncoming traffic. On a sealed window, rainwater contracts into small beads that run off independently due to the wind at higher speeds — from about 60–80 km\/h. The field of vision remains clearer, and the windshield wipers need to be used less frequently.\u003c\/p\u003e\n\n\u003cp\u003eAt lower speeds and when stationary, the seal also offers an advantage: the layer reduces the adhesion of insect residues, bird droppings, and road grime. These substances stick less strongly to the hydrophobic surface and are easier to remove during the next cleaning. This is particularly relevant in the summer season when insects adhere intensely to the windshield and are difficult to remove.\u003c\/p\u003e\n\n\u003cp\u003eIn winter, the seal reduces ice adhesion to the window. Ice adheres less intensely to a hydrophobic surface, is thinner, and is easier to remove with an ice scraper. ScheibenKlar 2 in 1 is not a complete de-icing product — but it makes scraping significantly less tedious than on an unsealed window.\u003c\/p\u003e\n\n\u003cp\u003eEven in fog and morning frost, the seal shows its strength: on sealed windows, frost settles less evenly. Instead of a uniform, firmly adhering layer of frost, often only thin crystal patterns form, which can be removed with a squeegee or ice scraper in a few strokes. Anyone who regularly has to scrape their vehicle early in the morning will clearly feel the difference after the first winter season with ScheibenKlar — especially compared to vehicles whose windows have no protective seal.\u003c\/p\u003e\n\n\u003cp\u003eFor wiper blades, the seal has a positive side effect: clean, well-repelling windows reduce the friction of the wiper blades on the glass. Wiper blades on unsealed windows with a grease film push dirt back and forth instead of removing it — this accelerates the wear of the rubber. On a sealed window, the blades glide more smoothly, clean better, and last longer.\u003c\/p\u003e\n\n\u003cp\u003eIn practice, this means: wiper blades that squeak and wipe streaky after just one season on an unsealed window often run trouble-free for two or three seasons on a window regularly treated with ScheibenKlar. The cost savings on wiper blades are an indirect but measurable benefit of regular window sealing — which quickly puts the product's purchase into perspective.\u003c\/p\u003e\n\n\u003ch3\u003eGlass Cleaners Compared — ScheibenKlar 2-in-1, ScheibenKlar Classic, and PROFILINE GlassPolish\u003c\/h3\u003e\n\n\u003cp\u003eThe SONAX range includes several products for glass cleaning and care. The \u003ca href=\"\/en\/sonax-xtreme-scheibenklar-glasreiniger\"\u003eXTREME ScheibenKlar\u003c\/a\u003e (without 2-in-1) is the classic glass cleaner without a sealing component. It is faster to use because no second buffing step is necessary, but it does not provide a permanent beading effect. For interior windows, where sealing would be counterproductive, it is the right choice. For exterior windows, where the sealing effect is desired, the 2-in-1 is the superior option.\u003c\/p\u003e\n\n\u003cp\u003eFor heavily scratched windows or burnt-in contaminations that a normal glass cleaner cannot remove, there is the \u003ca href=\"\/en\/sonax-profiline-glasspolish-glaspolitur\"\u003ePROFILINE GlassPolish\u003c\/a\u003e — a glass polish with cerium oxide that removes the finest scratches from glass surfaces with a polishing machine or manually. This is a more intensive preparation step that can be used before sealing with ScheibenKlar 2 in 1 to create an immaculate starting condition.\u003c\/p\u003e\n\n\u003cp\u003eFor maximum, long-term window sealing, there is the \u003ca href=\"\/en\/sonax-profiline-ceramiccoating-cc-glass-scheibenversiegelung\"\u003ePROFILINE CeramicCoating CC Glass\u003c\/a\u003e — a professional ceramic seal for windows with a durability of up to 12 months. It is more complex in preparation and application but offers significantly longer durability. ScheibenKlar 2 in 1 is the everyday product for regular care; CC Glass is for intensive basic treatment or for vehicles where minimal maintenance effort is desired for months.\u003c\/p\u003e\n\n\u003cp\u003eA frequently underestimated aspect in comparing the three products is the entry barrier. The PROFILINE CC Glass requires a complete glass preparation — polishing, cleaning, isopropanol degreasing — before the ceramic seal can be applied. Errors in preparation lead to uneven adhesion or stains that can hardly be corrected. ScheibenKlar 2 in 1, on the other hand, is more forgiving: if the window was not perfectly prepared, the seal may lose some durability in that area — but no permanent damage occurs. For private users who want clear windows without a learning curve, ScheibenKlar 2 in 1 is the right entry point into the topic of window sealing.\u003c\/p\u003e\n\n\u003ch3\u003eBuying Glass Cleaner — Who Benefits from SONAX XTREME Ceramic ScheibenKlar 2 in 1\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSONAX XTREME Ceramic ScheibenKlar 2 in 1\u003c\/strong\u003e is aimed at vehicle owners who want to clean their windows regularly and at the same time create a lasting beading effect for better visibility and easier cleaning. The 2-in-1 concept makes it particularly attractive for anyone who wants to keep their care efforts low — one product for cleaning and protection instead of two separate steps.\u003c\/p\u003e\n\n\u003cp\u003eScheibenKlar 2 in 1 is particularly recommended for vehicle owners who frequently drive in the rain or who want to improve safety on wet roads. The better visibility provided by beading windows is a noticeable advantage, especially during night drives in the rain, which increases reaction safety. Regular application every four to six weeks is sufficient to maintain the effect permanently.\u003c\/p\u003e\n\n\u003cp\u003eEven for vehicle owners who rarely wash their car or have little time for maintenance, ScheibenKlar 2 in 1 is a smart solution. Unlike dedicated window seals, which must be planned as a separate step after a complete cleaning, ScheibenKlar 2 in 1 can be conveniently integrated into the normal cleaning routine. Wiping the windows with ScheibenKlar once a month during vehicle cleaning is enough to consistently have clear, hydrophobic windows. No retooling, no second bottle, no extra time. This is the real promise of the 2-in-1 concept: maximum everyday suitability with minimal effort.\u003c\/p\u003e\n\n\u003cp\u003eFor vehicles with polycarbonate headlights that are clouded by UV radiation, ScheibenKlar 2 in 1 offers a simple maintenance solution for the surface — it cleans and protects the headlights without elaborate polishing. Used as a supplementary care product after a complete vehicle wash, it is quick to apply and delivers reliable results that improve both vehicle appearance and driving safety.\u003c\/p\u003e\n\n\u003cp\u003eOnce you have experienced the difference between unsealed and sealed windows during a rainy drive, you will make ScheibenKlar 2 in 1 a permanent part of your care routine — not because it is a luxury product, but because it delivers real, measurable added value in everyday life. Clear windows are not a luxury. They are the basis of safe driving in all weather conditions. The effort is minimal, the result immediately visible — and with 750 ml of content, one bottle lasts for many months of regular application on all glass surfaces of the vehicle.\u003c\/p\u003e","brand":"SONAX","offers":[{"title":"750ml","offer_id":57341581918543,"sku":"D1-SNX-01744000","price":9.23,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/sonax-xtreme-ceramic-scheibenklar-2-in-1-glasreiniger-versiegelung.png?v=1774733308"}],"url":"https:\/\/detailing1.ch\/en\/collections\/sonax-xtreme-scheiben-glas-glasreiniger.oembed","provider":"Detailing1","version":"1.0","type":"link"}