{"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 View on Every Glass — SONAX XTREME ScheibenKlar in Practical Use\u003c\/h2\u003e\n\n\u003cblockquote\u003e\n  \u003cp\u003e\u003cem\u003eWhat makes a good car glass cleaner? A good glass cleaner completely dissolves grease films, tobacco residues, and streaks without leaving any residue itself — the basic prerequisite for clear vision and trouble-free wiping while driving.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp\u003eHazy windows and greasy wipers are one of the most common complaints in vehicle interiors — and the cause is almost always the same enemy: grease film. Silicone-containing care products, dashboard care sprays, cigarette smoke, and body oils from touching the window form an invisible film on the glass, which scatters light in sunlight or at night and impairs visibility. \u003cstrong\u003eSONAX XTREME ScheibenKlar\u003c\/strong\u003e is a glass cleaner specifically developed for car windows, supplied in a 500 ml spray bottle, which reliably and residue-free removes grease films, streaks, and deposits.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrease-dissolving formula for streak-free interior and exterior cleaning.\u003c\/strong\u003e ScheibenKlar contains a special formulation that chemically dissolves and completely removes grease films, silicone residues, and tobacco deposits. A clear, streak-free surface is achieved on both interior and exterior windows, showing no glare in direct sunlight.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast drying without wipe water residue.\u003c\/strong\u003e The formulation dries quickly without limescale stains or chemical residues that could impair the adhesion of subsequent products. This also makes ScheibenKlar suitable as a preparation before a glass sealant, as the glass surface is immediately clear and dry after cleaning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e500 ml format for regular use in everyday vehicle life.\u003c\/strong\u003e The handy spray bottle is ideal for regular window care in one's own vehicle or for professional use in vehicle cleaning and detailing. The practical 500 ml quantity is sufficient for many cleaning cycles and allows for both economical and regular use without the hassle of repurchasing.\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 in glass cleaning is using the same cloth for interior and exterior windows. Always use separate microfiber cloths — one for the interior window, one for the exterior window. Spray the cloth, not the window directly, to avoid overspray on the dashboard or paint. On the interior window, wipe in diagonal strokes so that streaks are immediately visible and can be corrected directly.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eGrease Film and Tobacco Deposits on Windows — Chemical Causes and Why a Normal Household Cleaner Is Not Enough\u003c\/h3\u003e\n\n\u003cp\u003eThe grease film on vehicle interior windows is caused by a combination of several sources: outgassing from plastic and leather parts in the vehicle interior, silicone-containing care products from dashboard care, tobacco smoke, and body oils from touching the window when getting in and out. This invisible film contains organic fats and siloxanes, which adhere firmly to the glass and cannot be dissolved by water alone, as fat is hydrophobic and not absorbed by water.\u003c\/p\u003e\n\n\u003cp\u003eHousehold glass cleaners are often only conditionally suitable for cleaning car windows. They frequently contain ammonia or other chemicals that can damage painted or leather surfaces if the spray bottle is held too close or if the product splashes onto surfaces not suitable for these chemicals. Furthermore, many universal cleaners leave limescale residues that become visible on the window when drying. An automotive glass cleaner like ScheibenKlar is tailored to the specific needs of vehicle windows.\u003c\/p\u003e\n\n\u003cp\u003eThe season also noticeably influences cleaning requirements. In summer, insect residues and dried road splashes on the windshield are the biggest challenge; in winter, de-icing agent residues and salt mist are added, which dry on the lower edge of the window and form a stubborn white film. ScheibenKlar can be used all year round and is suitable for both scenarios — the formulation effectively dissolves both organic residues and mineral deposits, without the need for a special seasonal product for summer and winter.\u003c\/p\u003e\n\n\u003cp\u003eAnother critical point concerns vehicles with window tinting. Cheap glass cleaners with overly aggressive solvents can damage foiled windows or factory tinting by dissolving the film. The \u003ca href=\"\/en\/products\/sonax-xtreme-scheibenklar-glasreiniger\"\u003eSONAX XTREME ScheibenKlar\u003c\/a\u003e is designed for compatibility with vehicle glass, including tinted windows. The formulation is gentle on window films and tints while providing effective cleaning performance.\u003c\/p\u003e\n\n\u003cp\u003eA suitable glass cleaner is also important for motorhomes, caravans, and boats: Plexiglas windows and Makrolon glazing, as found in these vehicles, are more sensitive to solvent-based cleaners than conventional hard glass. For such surfaces, a glass cleaner designed for compatibility with plastic glazing is recommended. If unsure whether ScheibenKlar is suitable for a specific window technology, it should be tested beforehand on a small, inconspicuous area.\u003c\/p\u003e\n\n\u003ch3\u003eAreas of Application in the Vehicle — Windshield, Interior Cleaning, and Preparation for Glass Sealant\u003c\/h3\u003e\n\n\u003cp\u003eThe main application area of ScheibenKlar is the interior cleaning of the windshield and side windows. These surfaces accumulate the most grease film, as they are most exposed to outgassing from the interior. Regular cleaning — recommended at least once a month or when visibility is visibly impaired — keeps the windows clear and minimizes streaking from the windshield washer system, which spreads wash water on already greasy glass instead of removing it.\u003c\/p\u003e\n\n\u003cp\u003eOn the outside of the windshield, ScheibenKlar is ideal for removing insect residues, dirt splashes, and wipe marks caused by rubber wipers on dirty glass. Especially before winter months, a thorough exterior cleaning of the windshield is useful to ensure optimal adhesion of de-icing agents and glass sealants. Clean glass absorbs glass sealants such as \u003ca href=\"\/en\/products\/sonax-xtreme-ceramic-scheibenklar-2-in-1-glasreiniger-versiegelung\"\u003eXTREME Ceramic ScheibenKlar \"2 in 1\"\u003c\/a\u003e significantly better than greasy glass.\u003c\/p\u003e\n\n\u003cp\u003eIn professional detailing, ScheibenKlar is used as a pre-cleaning step before applying glass sealants. Silicone-based glass sealants only bond optimally to the window if no grease film blocks the adhesion of the sealant formula. Consistent pre-cleaning with ScheibenKlar ensures that the sealant achieves its full durability and that the water beading effect works evenly across the entire window surface.\u003c\/p\u003e\n\n\u003cp\u003eIn car dealerships and during vehicle detailing, window cleaning is often one of the last and most crucial steps before vehicle handover. A flawlessly clean windshield without grease streaks or streaking signals professional work and care to the customer at first glance. Those who do not cut corners on this last detail leave a lasting impression with a tool that truly delivers what it promises: crystal-clear, streak-free windows that reflect the quality of the entire vehicle detailing and remain in the customer's memory.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Technique for Streak-Free Results — What Matters in Glass Cleaning\u003c\/h3\u003e\n\n\u003cp\u003eThe technique of glass cleaning determines the result. First, treat the window in two passes: First pass wet — spray ScheibenKlar onto a microfiber cloth and evenly moisten the surface, allowing the cleaner to work. Second pass dry — with a second, clean microfiber cloth, polish the window in criss-cross movements. This two-step approach dissolves the grease film in the first pass and completely removes it in the second pass.\u003c\/p\u003e\n\n\u003cp\u003eWhen is the window truly clean? A simple practical test provides the answer: View the window against the light or at a shallow angle to the light source. Haziness and grease residues immediately show up as a milky turbidity, which is often invisible when viewed head-on. Only when the window appears uniformly clear and transparent from all angles is the cleaning complete. This backlight check is the safest quality test for glass cleaning and should be part of the routine at the end of every window cleaning.\u003c\/p\u003e\n\n\u003cp\u003eFor the interior window, a special note applies: On large windshields with a strong incline, interior cleaning is made more difficult by the design. A cleaning pad with a bent handle or an extended swivel holder for the microfiber cloth facilitates work in angles that are difficult to reach with a normal wiping arm. Even, gentle pressure and consciously overlapping wiping strokes in a diagonal direction provide the reliably best results and immediately and clearly show, through the backlight check, whether individual areas need to be reworked.\u003c\/p\u003e\n\n\u003cp\u003eA professional tip for the most stubborn form of grease film: If a slight haze still shows after two cleaning passes, an additional pass with a cloth soaked in IPA before applying ScheibenKlar can help. IPA dissolves particularly stubborn silicone residues that are not completely dissolved by normal glass cleaners. After the IPA cloth, then rework regularly with ScheibenKlar — the result will be crystal-clear glass without streaks, even with years of grease build-up.\u003c\/p\u003e\n\n\u003cp\u003eFor heavily soiled glass with old, dried-on silicone residues, a second complete cleaning pass may be necessary. This condition often arises when no suitable glass cleaner has been used for a long time or when silicone-containing care products such as dashboard spray have splashed onto the window. Those who regularly care for their vehicle with ScheibenKlar avoid the formation of stubborn deposits and save themselves elaborate multiple cleanings.\u003c\/p\u003e\n\n\u003cp\u003eA frequently overlooked area is the rear window with heating filaments. When cleaning this window, always wipe along the heating filaments — i.e., horizontally — never across them. Too much friction across the heating filaments can damage the adhesive bond of the printed filaments in old or already weakened vehicles. With a well-soaked, soft microfiber cloth and gentle pressure along the filaments, the rear window can also be cleaned without problems.\u003c\/p\u003e\n\n\u003cp\u003eThe right choice of cloth also has a great influence on the result. For glass cleaning, microfiber cloths with a short, smooth pile structure are best suited, as they leave no fibers and offer a uniform cleaning surface. Cloths with a long pile structure, which are suitable for drying or applying sealants, are less suitable for glass cleaning — they leave more fibers on the cleaned surface and require an additional post-cleaning 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 line, there are several options with different focuses. The XTREME ScheibenKlar is the universal glass cleaner without additional sealing properties — it cleans reliably and leaves a clean surface that is prepared for further care products. It is the right choice when the focus is exclusively on cleaning or when a standalone glass sealant is to be applied in the next step.\u003c\/p\u003e\n\n\u003cp\u003eThose who want to build up their glass cleaner assortment systematically and cost-effectively can start with ScheibenKlar as a base and, if necessary, supplement it with Ceramic ScheibenKlar as a practical upgrade option for vehicles that regularly require a glass sealant. This combination — pure cleaner for thorough deep cleaning, 2-in-1 product for quick refreshment — covers both application scenarios and offers maximum flexibility in daily business, without having to invest in an overly complex product 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 action with a ceramic sealant in one step. For users who want to save time and at the same time build up a basic sealant on the window, this is the more efficient solution. The cleaning performance is slightly less intensive than with the pure ScheibenKlar, as the formulation is optimized for both functions.\u003c\/p\u003e\n\n\u003cp\u003eFor professional users with high glass cleaning volumes, the \u003ca href=\"\/en\/products\/sonax-profiline-glasscleaner-glasreiniger\"\u003ePROFILINE GlassCleaner (concentrate)\u003c\/a\u003e offers a more economical alternative. The concentrate can be diluted to the desired strength, which significantly reduces the cost per vehicle application. For businesses that clean many vehicle windows daily, the concentrate is the more professional choice compared to the ready-to-use ScheibenKlar in the 500 ml spray bottle.\u003c\/p\u003e\n\n\u003ch3\u003eBuying Guide — For Whom XTREME ScheibenKlar Is the Right Choice\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSONAX XTREME ScheibenKlar\u003c\/strong\u003e is the right choice for vehicle owners and detailers looking for a reliable, universal glass cleaner without frills. The 500 ml format is ideal for the regular care of one or more vehicles in private or commercial use, without needing the economy of a large professional container. Those who value clear vision and consistently want to avoid haze and streaking while driving will find a reliable tool here for their regular window routine. The application is simple and quickly learned — and the result is immediately noticeable on every drive in backlight or night driving conditions.\u003c\/p\u003e\n\n\u003cp\u003eAs a verified SONAX specialist dealer, Detailing1 carries ScheibenKlar in its range. Those who want to use the product as part of a comprehensive glass cleaning and care routine will also find all suitable complementary products from the SONAX line at Detailing1 — from pre-cleaning to durable ceramic sealant for vehicle windows.\u003c\/p\u003e\n\n\u003cp\u003eFor fleet operators and businesses with many vehicles, it is advisable to check whether the concentrate format of the PROFILINE GlassCleaner is more economically favorable than the ready-to-use product. With regular use on multiple vehicles, the cost difference quickly adds up. ScheibenKlar, on the other hand, is the ideal choice for businesses or private users who prefer a simple, ready-to-use product without dilution.\u003c\/p\u003e\n\n\u003cp\u003eUltimately, the choice of the right glass cleaner is a question of usage frequency and the desired result. Those who rarely clean their vehicle and seek maximum simplicity are perfectly served with ScheibenKlar. Those who professionally detail many vehicles and want to optimize both cost and results can build up the SONAX glass cleaner range as a system — with ScheibenKlar as the standard cleaner, Ceramic ScheibenKlar for sealant care, and the concentrate for high-volume use. As a verified SONAX specialist dealer, Detailing1 is happy to advise on compiling the right glass cleaning assortment for the respective business or application area.\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.be\/en\/collections\/sonax-xtreme-scheiben-glas-glasreiniger.oembed","provider":"Detailing1","version":"1.0","type":"link"}