Dr. Wack "A1" A1 "ULTIMA Show & Shine Polish" Polish 250ml

A1 "ULTIMA Show & Shine Polish" takes out holograms without putting new ones in

What is A1 "ULTIMA Show & Shine Polish"? The strongest hand polish in Dr. Wack's A1 range, built on synthetic abrasives from wafer manufacturing, with carnauba protection for up to three months. Not for matte paint, matte wraps, chrome-plated plastic parts or anything that goes deeper than the clear coat.

A1 "ULTIMA Show & Shine Polish" is a polish from Dr. Wack in Baar-Ebenhausen that removes fine scratches and weathered paint instead of filling them. The same abrasives are otherwise used to level silicon wafers in microchip production. There, the result isn't decided by how hard a grain is, but by how identical it is to the grain next to it.

That's exactly what sets it apart from an ordinary polish. Size, shape and hardness are identical across the whole batch, and as you work, the grains break down evenly into the nano range. In a normal compound the grain size varies, and the few oversized outliers are what put in the new fine scratches you then have to cover up again. For you, that means what you see after buffing off is the actual result, not a layer sitting on top of it.

• A grain that doesn't go rogue. Dr. Wack uses synthetic abrasives like the ones used to polish wafers in microchip manufacturing, and explicitly targets holograms and car-wash scratches without re-marring. The cutting stage finishes down to a gloss on its own, so you don't switch to a second, finer compound. Anything deeper than a finishing polish removes stays out of scope — the clear coat on top is only 30 to 60 microns thick.
• 3rd place out of nine, measured after degreasing. In 2020, KÜS and AUTO BILD tested nine premium polishes on black panels, three quarters of the surface artificially weathered down to a gloss level of 60, the untreated quarter at 90. Application was five grams of product, 1.5 kilograms of pressure and five passes in a cross-hatch. Before the final rating, the lab degreased with isopropanol so waxes couldn't hide any scratches. The result: 238 out of 300 points.
• Three months of protection instead of bare paint. In the same step, carnauba wax lays a film on the freshly polished paint, which Dr. Wack rates at up to three months. The manufacturer recommends two to three applications a year, and the 250 ml covers that several times over. Day to day, that means you don't have to seal the same afternoon just so the panel isn't left unprotected.

Detailing1's tip from the shop: Don't judge the result in daylight. Diffuse light irons out holograms and haze visually — exactly the defects you're polishing against. Grab an LED spot light, hold it low across the panel and leave a palm-sized patch unpolished next to it. Only that comparison tells you whether the first pass was enough. We often see a second pass even though the first one had already done the job, and every pass costs 0.5 to 5 microns of clear coat that you'll never get back.

With ULTIMA, the whole door is one section

The instructions call for entire body panels in one go, and that's not about convenience — it follows directly from how this polish works.

Washing comes first. Unwashed paint carries loose grit, and it travels under the sponge across the whole panel. If the paint still feels gritty after drying, or there are little brown specks in the white, take the fallout off first. Then work in the shade on a cool panel, never on hot paint in the sun.

The 250 ml bottle comes with a microfibre cloth; the sponge isn't included. Apply to the dry polishing sponge, not the paint, and keep the sponge loaded for the whole section. If it runs dry, the grain loses its lubricating film and each pass turns into friction with no effect. On pressure, the manufacturer is blunter than most: more pressure going in, better result.

Then comes the step that sets this polish apart from most. The film has to dry completely before the cloth goes over it, and according to Dr. Wack it then comes off as easily as dusting. Since there's no wet edge that can flash off too early, your working unit isn't half a square metre but the whole panel: door, wing, bonnet in one go.

In the scene, a polish that's meant to dry on raises a few eyebrows. That objection mixes up two different things. The cutting happens under your hand, while you're rubbing; the drying time afterwards just makes removal easy. Which of the two did the work on your car is answered by the spot-light test above, on your own paint.

What ULTIMA doesn't remove, a machine won't either

With this polish, a machine polisher is a speed tool, not a power tool. It covers more area per hour, but it won't take a single extra micron out of the clear coat.

The ceiling is in the grain, not in your arm. Depending on technique, a finishing polish removes around 0.5 to 5 microns of clear coat, a cutting compound on a rotary 3 to 8. ULTIMA belongs in the first group, even applied by machine. Anything deeper stays put and needs its own cutting step, a suitable pad and, if in doubt, a paint depth gauge.

On the machine, one rule applies that barely matters by hand: work controlled, small sections, no heat build-up. Heat under the pad is the fastest route to exactly the holograms you're polishing against. On dark metallic, a rotary spinning too fast inflicts the damage the product is then supposed to take away again.

Two surfaces are off limits, full stop. On matte paint and matte wraps, grain and wax make the surface glossy, and there that's a write-off, not a work in progress. Chrome-plated plastic parts and badges are also left out. If polish ends up in rough, unpainted plastic, get it back out with a trim dressing before it dries white in there.

That leaves the forum accusation that whatever disappears here is just filled and comes back after a few washes. Worth taking seriously, because there's carnauba in the product. The lab provides the solid counter-check: KÜS degreases the panels before the final rating to strip off waxes and silicones, and after that the result still landed in 3rd place out of nine.

That gives you a clear split. If the paint is basically sound and it's holograms, haze and car-wash scratches that bug you, ULTIMA is the tool. If the whole car is dull and the price per litre matters, reach for the 500 ml all-over polish from the A1 range of polishes and paint cleaners. And if the scratch goes through the clear coat, neither will help — that's a job for the body shop.

Dark paint is where ULTIMA shows what it's built for

Holograms and haze, the milky film over the reflection, show up first on black and dark metallic — and that's exactly where removed and covered-up go their separate ways.

It's no coincidence that KÜS tests on black panels. Three quarters of the surface had been weathered down to a gloss level of 60, while the untreated quarter sat at 90 — a contrast you simply don't see on light silver. If you drive a dark car, though, you see it every Sunday on the driveway.

That makes A1 "ULTIMA Show & Shine Polish" the product for paint that's basically fine but missing the last few percent: after a machine session that left holograms in direct light, before a sale, before a meet, after a winter of weekly car washes. If you want to rescue a completely weathered car once a year, though, you need a dedicated cutting step and a machine.

Per litre, the 250 ml costs a good three times as much as the 500 ml all-over polish from the same range. What you get for that isn't more product, it's a different grain. Dr. Wack recommends two to three passes a year, and the bottle covers that several times over — as long as you remove it with a deep-pile premium microfibre cloth and don't top up, because a saturated cloth won't pick anything up.

And here's the point no label does the maths on: your clear coat is a bank account you can only withdraw from. There are 30 to 60 microns in it, and if you want to keep its protection, you shouldn't take more than 10 to 15 of them off over the car's entire life.

At 0.5 to 5 microns per pass, that's around thirty polishes or three, depending on how aggressive you go. So the interesting question isn't which polish removes the most, but which removes the least and still delivers. That's exactly the logic behind the uniform grains: a grain that doesn't go rogue doesn't force you to level the same panel a second time.

How to use A1 "ULTIMA Show & Shine Polish"

One panel, one pass, one dry cloth

Wash first and dry completely. Otherwise loose grit on the surface gets dragged along under the sponge, and you trade holograms for fresh scratches. If the paint still feels gritty afterwards or has brown specks in it, take the fallout off first. Work in the shade on a cool panel, never in the sun and never on hot paint.

Shake the bottle well and apply a thin amount to the dry polishing sponge, not to the bodywork. Work it in with firm pressure in small circles and keep the sponge loaded for the whole section. Foam that runs dry just rubs instead of cutting.

Do one body panel in one go — the whole door, wing or bonnet. Then let the film dry completely and remove the residue with the included microfibre cloth; once it's properly dry, that's as easy as dusting. Flip the cloth often, because a saturated one only spreads residue around.

You can work by machine; it saves time on big panels and doesn't increase the cut. Then the rule is: small sections, controlled speed, no heat build-up under the pad. If a spot is still there after buffing off, repeat the pass right there instead of over the whole panel. A well-kept finish doesn't need more than three passes a year, and the manufacturer doesn't recommend more either.

Notes: Matte paint and matte wraps are ruled out, because grain and wax make them glossy and that can't be undone. Chrome-plated plastic parts and badges are also left out, and polish residue in rough unpainted plastic comes out with a trim dressing before it dries white. Every pass costs 0.5 to 5 microns out of the roughly 30 to 60 microns of clear coat there is in total — so only polish what needs it. Store the bottle frost-free and shake before every use.