SONAX PROFILINE OS "04-05" High Gloss Polish (One-Step) 250ml

Paint Correction and High Gloss in One Polishing Pass — PROFILINE OS "04-05" in Professional Use

What does SONAX PROFILINE OS "04-05" achieve? The one-step polish combines medium abrasive power with high gloss performance — scratch correction and finishing in one step, silicone-free and machine-compatible for professional workshop and detailing use.

In professional vehicle detailing, efficiency directly determines economic success. A polish that delivers correction and finishing in a single pass not only saves time but also reduces machine effort, pad consumption, and the time-consuming switching between different polishing steps. The SONAX PROFILINE OS "04-05" has been developed precisely for this purpose: a one-step polish with medium abrasive power and high gloss effect, which corrects scratches and simultaneously brings a deep high gloss to the paint surface in a single machine pass. Available in 250 ml and 1000 ml, silicone-free formulation — designed for professional workshop and detailing operations.

• Correction and finishing in one step for efficient time management. Those who want to polish a lightly to moderately scratched paint without performing two separate polishing steps will find in the OS "04-05" a tool that accomplishes both tasks in one polishing session. The time saving per vehicle is noticeable — especially in commercial operations, where every hour saved directly improves the margin.
• Medium abrasive power corrects fine to medium paint scratches without excessive paint removal. The abrasiveness of the polish is calibrated to safely remove holograms, wash marring, and fine to medium oxidation layers. For most vehicles in normal use, this abrasive power is entirely sufficient — without unnecessarily reducing the valuable clear coat thickness with overly aggressive abrasives.
• Silicone-free formulation for workshop use without contamination risk. Silicone in care products is problematic for painting work: it prevents the adhesion of topcoats and clear coats and is difficult to remove completely with simple cleaning. The silicone-free formula of the OS "04-05" makes the product suitable for body shops that also rework or paint detailed vehicles.

Practical tip from Detailing1: The OS "04-05" achieves the best results with a medium-hard foam pad on an orbital polisher. Apply the product evenly to the panel at a low speed, then increase the speed for the working pass. When the polish changes from cloudy to clear during application — a typical sign of diminishing abrasives — the optimal time for buffing is reached. For buffing, switch to a clean microfiber cloth and check the result against the light.

The OS designation explained — what the numbers 04-05 say about abrasive power and gloss

SONAX labels its PROFILINE polishes with a pair of numbers that directly inform about the product properties: The first number stands for abrasive power (Cut), the second for gloss performance (Gloss). The scale ranges from 1 (minimal) to 6 (maximal). The OS "04-05" thus has a medium to strong abrasive effect with simultaneously high gloss capability — a combination that is optimal for a one-step approach: enough bite for real correction work, enough gloss for a presentable finishing result.

The "OS" in the product name stands for "One-Step" — the principle of combining abrasive and gloss components in a single product. Classic two-step workflows first use an abrasive polish with high abrasiveness that mechanically removes scratches, then a finish polish that eliminates holograms and creates deep gloss. The OS line eliminates this second step by having the abrasive particles initially abrade aggressively during the polishing process and then break down into smaller particles that produce the final polished finish.

In the SONAX PROFILINE portfolio, there are several OS variants developed for different initial situations and paint conditions. The PROFILINE OS "02-06" has less abrasive power (02) with even higher gloss performance (06) and integrated wax sealant — it is the right choice for new or already detailed paints that only require a care polish without significant correction. The OS "04-05" cuts more aggressively and is designed for paints in typical use condition with fine to medium scratches.

The concept of diminishing abrasives is a crucial factor for the quality of one-step polishes. Simple products with fixed abrasive particles polish uniformly aggressively from beginning to end; the fluidity during buffing can then leave coarse polishing marks in the paint, making a subsequent finishing step mandatory. With the OS "04-05", the abrasives progressively break down under pressure and heat, becoming finer and finer, and automatically creating a finer surface at the end of the work step. This physical process is the core reason why professional-grade one-step polishes work and cannot be replaced by inexpensive universal polishes.

Application of the one-step polish — machine-appropriate workflow for orbital and rotary polishers

The OS "04-05" is designed for machine application. A one-step polish with this abrasive power can hardly be used effectively by hand because the pressure and speed would be too low for complete scratch correction. In professional operations, either orbital polishers (DA-Polishers) or rotary polishers are used — both work with the OS "04-05", but produce different results.

With an orbital polisher (DA-Polisher), the error tolerance is significantly higher than with a rotary machine: the random movement of the eccentric prevents the formation of holograms or swirls, even if the machine lingers briefly in one spot. This makes the orbital polisher the preferred choice for beginners in machine detailing and for businesses that want to combine high throughput speeds with consistent quality results. A medium-hard foam pad with a diameter of 135–145 mm is recommended for one-step polishing with an orbital polisher.

With a rotary machine, a stronger cut is achieved with the same polish — which can make a significant difference for heavily scratched paints. A rotary machine requires more experience, as overheating and hologram formation are possible if the pad and movement speed are not correct. A softer pad than for the orbital polisher helps reduce the risk of holograms. For experienced detailers, the rotary machine with the OS "04-05" is a very fast combination for correction work.

The correct amount of product is an underestimated factor: too little polish on the pad dries too quickly and does not create a uniform abrasive effect. Too much polish slings off the pad at high speeds and leads to product waste without quality improvement. As a guideline: about four to five pea-sized dots on the pad for a standard panel like a hood or driver's door. Before the first pass, slowly spread the pad over the panel before increasing the speed.

Pad care between panels is another quality factor that is often underestimated in everyday use. A caked-up pad with dried polish residue polishes worse than a fresh pad and can even cause scratches on sensitive surfaces. In professional operations, a pad washing machine or a pad cleaning brush is recommended to regularly clean the pad during a long detailing session. Alternatively, a supply of pads is recommended so that a fresh pad is always available without interrupting the workflow.

Areas of application and limitations — for which paints and scratch patterns the OS "04-05" is suitable

The OS "04-05" covers the largest range of applications within the PROFILINE One-Step line. Vehicles in normal use condition — parking abrasions, wash marring, fine holograms from previous detailing, light weathering oxidation — are ideal candidates for detailing with the OS "04-05". In these cases, a single polishing pass is sufficient to achieve a significantly improved gloss level and a cleanly corrected surface.

The limits of the OS "04-05" lie where deep scratches or heavily oxidized clear coat surfaces require higher abrasive power. A deep scratch where the nail catches when running over it reaches into the base coat or even through the clear coat — here, an abrasive polish from the high-cut range is necessary before a one-step polish can be meaningfully used. Even with heavily matted surfaces with pronounced clear coat oxidation, an aggressive abrasive polish like the PROFILINE Cut+Finish "5/5" is recommended first to prepare the surface before the OS "04-05" takes over the finishing.

The OS "04-05" has proven particularly effective for used car trade-ins and consignments: vehicles that have not been known to be detailed and whose paint condition requires an assessment without extensive preliminary examination can be quickly assessed with a test panel. If the one-step polish visibly removes scratches and builds gloss on a test area, the abrasive power is sufficient. If not, it is clear that a more aggressive product is necessary beforehand.

Important for commercial use: The test panel should always be performed in a less exposed area — such as the B-pillar or the lower edge of a rear door — so that an unexpected result does not leave visible damage on a main surface. For businesses that regularly detail vehicles of unknown origin and pretreatment, a structured polishing triage is indispensable: first decontamination, then test panel, then decision on product choice for full detailing. This approach prevents costly mistakes and delivers a consistently good result to the customer.

On high-gloss paints of darker colors — black, anthracite, dark blue — polishing marks are particularly visible. If holograms are seen after polishing on these shades, a short post-polishing step can optionally be added with a soft finishing pad and the lighter PROFILINE NP "03-06", which eliminates remaining fine marks and further deepens the gloss. In most cases, however, this is not necessary on light to medium shades — the one-step polish leaves a hologram-free, deep high-gloss result directly with the right pad, which is immediately presentable.

OS "04-05" in comparison — Classification in the PROFILINE polish matrix

The SONAX PROFILINE polish series offers the right product for every correction effort. To make the right choice, a look at the entire range helps: On one side are the heavy-cut polishes with high abrasive power and low gloss effect, on the other side are the finish polishes with minimal abrasive power and maximum gloss performance. The OS products are positioned across this as one-step solutions: They forgo the highest abrasive grades, but combine practical correction performance with good gloss values.

In a direct comparison with the OS "02-06", the difference lies clearly in the application situation: The OS "02-06" is a care polish with wax sealant for regularly maintained vehicles without correction needs — it shines excellently and seals at the same time, but has little bite for scratches. The OS "04-05" is the one-step solution for vehicles that need real correction. Those who detail vehicles in fleet operations that have accumulated significant marks between intervals will use the OS "04-05".

Compared to a classic two-step workflow with Cut+Finish "5/5" followed by a finish polish, the OS "04-05" saves time at the expense of maximum correction depth. Those who want to detail a vehicle to show car level will not be able to avoid the two separate steps. For workshop detailing operations that detail several vehicles daily in an acceptable time and want to deliver a good — but not perfection-seeking — result, the OS "04-05" is the more economical choice.

A practical decision-making scheme for polish selection: If, after cleaning and decontamination, the vehicle only shows fine wash marring swirls under an LED lamp and no deep scratches — OS "04-05" is sufficient. If deep individual scratches or extensive heavy oxidation are present — first Cut+Finish or heavy-cut polish, then optionally finish with the OS "04-05". If the vehicle has been freshly detailed and only a few months have passed — OS "02-06" for care without significant removal. These three scenarios cover the majority of daily detailing work, and for the middle case, the one-step polish with 04-05 designation is usually the right answer.

Buying advice — for whom the SONAX PROFILINE OS "04-05" is the right choice

The SONAX PROFILINE OS "04-05" is the polish for professional detailers who work on vehicles daily and are looking for a reliable one-step solution for standard cases. Car dealerships, used car dealers, rental car fleets, and mobile detailers benefit from a product that delivers a clean result in one polishing pass for typical use conditions. The 1000 ml bottle is designed for continuous operation; the 250 ml bottle is suitable for individual users or for testing before a bulk purchase.

The silicone-free formulation also makes the polish suitable for businesses that offer vehicle detailing and paint repair under one roof. Those who subsequently bring detailed vehicles into the paint booth or perform partial paint jobs must be sure that polish residues do not cause fisheyes, wetting problems, or adhesion problems in the fresh topcoat. With the silicone-free formulation of the one-step polish, this risk factor is reliably eliminated.

As a verified SONAX specialist dealer, Detailing1 carries the one-step polish in both container sizes and is happy to advise on the selection of the appropriate one-step product for the respective area of application. If you are unsure which OS variant is better suited for your requirements, it is best to describe the typical paint condition of the vehicles to be processed — then the recommendation can be made precisely. For businesses that do not yet have experience with the PROFILINE polish series, it is recommended to start with the 250 ml bottle to calibrate pad choice and machine settings on a test vehicle before ordering the 1-liter container for full operation.