SONAX PROFILINE Interior Cleaner 10l

Interior Cleaning in Large Operations — SONAX PROFILINE Interior Cleaner as a Concentrate for Professionals

What makes the interior cleaner from the SONAX PROFILINE range special? The powerful interior cleaner concentrate for textiles, plastics, and leather cleans vehicle interiors effectively and economically — in 10-liter and 200-liter containers for professional operations with high vehicle throughput.

Interior cleaning is time-consuming, material-intensive, and one of the core services of any professional detailing operation. Those who clean multiple vehicle interiors daily need a product that works reliably, can be dosed economically, and can be kept in sufficient quantities. The SONAX PROFILINE Interior Cleaner is designed as a concentrate — for economical bulk container use in professional operations, available in 10 liters for medium-sized operations and in 200 liters as a drum for large operations and car wash facilities with continuous demand.

• Concentrate for flexible dosing and high yield. As a concentrate, the product can be diluted to the desired strength depending on the degree of soiling and application area. Lightly soiled surfaces are treated with a lower concentration; heavily soiled textiles or materials with dried-on residues require a higher concentration. This flexibility reduces the cost per treatment and allows the same product to be used for different cleaning intensities.
• Universally applicable on textiles, plastics, and leather. A vehicle interior consists of a wide variety of materials — textile seats, hard plastic trim, leather or synthetic leather, carpets, and headliners. The Interior Cleaner covers all these surfaces and eliminates the need to switch between different cleaning agents depending on the material. This significantly simplifies the workflow and reduces the need to stock specialized products.
• Economical bulk containers for high throughput. The 10-liter canister and the 200-liter drum are designed for continuous professional use. Compared to small containers, the price per liter is significantly lower, which, with daily use on many vehicles, directly translates into cost savings. The 200-liter drum is suitable for operations that work with permanently installed dosing systems.

Practical tip from Detailing1: For daily routine interior cleaning, dilute the Interior Cleaner with water at a ratio of 1:10. For stubborn stains on textile seats or heavily soiled floor mats, the concentration can be increased to 1:5 or used undiluted. Apply the diluted product with a microfiber cloth, a soft brush, or an application sponge — do not let it dry on the surface, but wipe it off immediately after the dwell time or remove it with a damp cloth. Always apply a suitable leather care product to leather after cleaning, as cleaners can remove the natural leather fats.

Interior Cleaner as a Concentrate — Mode of Action, Ingredients, and Dilution Recommendations

The SONAX PROFILINE Interior Cleaner is formulated as a surfactant-based concentrate — surfactants are molecules that form a bridge between water and grease, encapsulating dirt particles and releasing them from the surface when wiped off. This basic technology is established in vehicle interior cleaning, as interior dirt consists of a mixture of body fats, dust, food residues, and textile particles — all compounds that are reliably dissolved by surfactant-based cleaners.

The concentrate formulation has several advantages over ready-to-use spray cleaners: transportation costs and storage volume per unit are lower, as a large part of the volume in ready-to-use products is water, which can be added more cheaply on-site. In professional operations, where many liters of cleaner are used daily, this advantage adds up to significant cost savings over the year.

The recommended dilution ratios for the Interior Cleaner depend on the application area. As a general guideline: for routine cleaning of lightly soiled surfaces (dashboard, door panels, storage compartments), 1:10 to 1:15 is recommended. For medium soiling (seats, floor mats after normal use), 1:5 to 1:8 is suitable. For heavy soiling — textile seats with food or drink stains, ingrained dirt — the concentrate can be set to 1:2 to 1:3 or worked in directly undiluted with a brush.

The concentrate's formulation is also designed not to leave residues on surfaces after wiping, which would impair the appearance. A common problem with cheaper interior cleaners is streaking on smooth plastic surfaces — the product dries unevenly and leaves streaks that only become visible in direct light. The product is optimized for low-residue work, which significantly reduces the need for post-processing of treated surfaces.

An important note for leather surfaces: surfactants not only remove dirt but also conditioning fats from the leather. Regular cleaning with the Interior Cleaner on leather seats should therefore always be accompanied by follow-up care with a SONAX PROFILINE LeatherCleaner-compatible leather care product to replenish the leather nutrients and keep the material supple.

Correctly Applying Interior Cleaner — Workflow for Textiles, Plastics, and Difficult Stains

For a complete interior cleaning, the workflow begins with removing all loose items and thoroughly vacuuming the vehicle interior. Dust and dry dirt not removed before wet application combine with the cleaner to form a dirty sludge, making cleaning difficult and quickly soiling the cloth. Only after vacuuming is the Interior Cleaner used.

On hard plastic surfaces — dashboard, center console, door panels — the diluted solution is applied with a damp microfiber cloth and worked in with circular motions. The cloth should be damp, not wet; excessive moisture can penetrate cracks and crevices and lead to staining. After a dwell time of 30–60 seconds, the dirt is picked up with a clean, dry microfiber cloth.

For textile seats and carpets, a spray application of the diluted solution followed by working it in with a medium cleaning brush is recommended. Brush strokes should be in the direction of the fibers to avoid roughing up the textile fibers. For heavy stains, the area can be treated multiple times; between passes, the surface should dry briefly to prevent moisture from penetrating the seat foam. A wet vacuum after the last pass picks up dissolved dirt and excess liquid, significantly reducing drying time.

For machine textile cleaning — with a steam cleaner or an extraction machine — the diluted Interior Cleaner can be filled into the machine's tank as a cleaning agent. Its compatibility with extraction machines makes it an economical alternative to expensive special agents for steam interior cleaning. When used in an extraction machine, the dilution should be slightly higher than for manual application to avoid excessive foaming in the machine. In case of doubt, consult the equipment manufacturer for recommended maximum concentrations for the cleaning solution — some extraction machines are not designed for very foamy products and could be damaged.

The SONAX PROFILINE Interior Sponge "Duo" is suitable as an applicator for cleaning smooth plastic and leather surfaces — its two different sides allow both cleaning application and the application of care products after cleaning with the same tool.

Interior Cleaner Application Areas — Where the Concentrate Shows Its Value

The product is designed for operations that clean many vehicles daily. Detailing businesses, car rental companies, fleet management, car dealerships, and vehicle detailers who recondition used cars for resale are typical users. For these operations, not only the cleaning performance but also the economic efficiency of the product is crucial — the Interior Cleaner as a concentrate in 10- or 200-liter containers minimizes material costs per vehicle.

For used car detailing, the Interior Cleaner is particularly relevant: a used vehicle interior shows typical contamination patterns after years of daily use — grease deposits on the steering wheel and armrests, ingrained dirt in the seats, dust in the ventilation grilles, and lint on the carpet. A consistent cleaning pass with the Interior Cleaner — from headliner cleaning to floor mats — significantly increases the perceived value of the vehicle and is crucial for dealer sales.

Fleet operators and car rental companies who have their fleet regularly cleaned benefit particularly from the 200-liter drum. With a permanently installed dosing system — a wall pump or an automatic mixing system — the Interior Cleaner can be dosed directly into the spray bottle or container in the correct ratio, without manual transfer. This infrastructure quickly pays for itself with high vehicle throughput.

Headliners are among the most demanding areas of interior cleaning. The fabric is delicate, should not get too wet (risk of deformation due to soaked adhesive), and should not be treated too vigorously with a brush. For headliners, the Interior Cleaner is recommended in a higher dilution (1:15 to 1:20) and applied with a slightly damp microfiber cloth in gentle, linear motions. No scrubbing — the dirt is loosened by the surfactant action, not by mechanical abrasion. This gentle approach keeps the headliner in good condition over many cleanings.

For businesses that also offer specialized cleaning services in addition to standard interior cleaning — leather cleaning, mold removal, odor neutralization — the Interior Cleaner serves as the first stage base cleaner. The SONAX PROFILINE SensitiveSurface Detailer takes over the fine care of sensitive surfaces after basic cleaning with the Interior Cleaner, and the SONAX PROFILINE Interior Detailer Concentrate complements as a care product that conditions surfaces after cleaning.

Interior Cleaner Compared — Concentrate vs. Ready-to-Use, Interior Cleaner vs. Specialty Cleaners

In the market, there are two basic approaches to vehicle interior cleaning: ready-to-use spray products and concentrates. Ready-to-use products are immediately available and require no dosing — they are suitable for occasional use or for employees without experience in dilution ratios. Concentrates are more expensive per liter, but significantly cheaper per application due to dilution. In professional operations with high volume, the concentrate pays for itself within a few weeks of operation compared to ready-to-use alternatives.

The comparison with specialty cleaners — dedicated leather cleaner, textile cleaner, plastic cleaner — shows the strength of the universal Interior Cleaner: one product for all surfaces simplifies inventory management, reduces the number of products, and simplifies the workflow. However, those who clean very delicate leather surfaces (nappa leather, natural leather) or special textiles (Alcantara, velour) should consider the more specific products from the SONAX PROFILINE range that are optimized for these materials.

In terms of price-performance, the concentrate is clearly the most sensible format for professional operations. Ready-to-use interior cleaners in 500ml or 1-liter bottles cost many times more per application than an equivalent mixed from the concentrate. Anyone who compares the cost per cleaned vehicle with the Interior Cleaner concentrate against a brand-name spray will immediately recognize the savings potential — and understand why professional operations consistently rely on concentrates.

Buying SONAX PROFILINE Interior Cleaner — Container Sizes and Recommendation for Operations

Odor problems in vehicle interiors — a common customer request — are not completely solved by the Interior Cleaner alone, but are significantly reduced. Odors are caused by mold, dried organic residues, and particles embedded in the textile layers. The Interior Cleaner removes the organic basis of the odor through its cleaning action; for stubborn odors, a special odor neutralizer should be used after basic cleaning. The combination of thorough mechanical cleaning with the Interior Cleaner and subsequent odor neutralization is the most effective system for vehicles with strong odor problems.

The choice between the 10-liter canister and the 200-liter drum depends on the daily consumption in the operation. For a detailing business that completely details 3–5 vehicles internally daily, the 10-liter container is sufficient for several weeks. Larger operations with 10 or more vehicles daily — car rental companies, car dealerships, or car wash facilities — benefit from the 200-liter drum, which further reduces material costs per application and requires infrequent reordering.

The Interior Cleaner integrates seamlessly into the PROFILINE system workflow: pre-cleaning with the MultiClean "Alkaline" for exterior washing, Interior Cleaner for interior cleaning, SensitiveSurface Detailer or Interior Detailer for finishing care — a coordinated system from one brand that reliably reproduces professional results and, through its completeness, minimizes the need for products from other manufacturers in everyday detailing.

Choosing the correct dilution ratio quickly becomes routine with a little experience. Operations new to the concentrate can start with a standard ratio of 1:10 and adjust the ratio to 1:7 or 1:5 if the results are insufficient. It is advisable to keep a small log of the dilutions used for different vehicle and dirt types — after a few weeks, the operation will have a reliable standardization that saves time and ensures consistent results. If you work with multiple employees, this log can be prepared as an internal work instruction so that all employees work with the same dilutions and application parameters — a crucial step for quality assurance in growing businesses.

For businesses new to the PROFILINE range, the Interior Cleaner is a good starting point: the product is versatile, easy to use, and covers the most important part of the detailing business. The decision for the concentrate over ready-to-use products is a clear signal that the operation works professionally and cost-effectively — a quality feature that is reflected in the price and in customer communication. Those who can explain to their customers that they work with a professional SONAX PROFILINE concentrate, mixed as needed, communicate experience and systematics — and clearly distinguish themselves from operations that use supermarket sprays from a can. This transparency builds trust and justifies professional prices for interior cleaning services.