What is a Simoniz?
Quick answer: Simoniz is a long-standing car care brand, founded in 1910, whose name became shorthand for waxing a car. They are still active in the UK with award-winning retail products, distributed by Holts, though not ones we currently stock in the workshop. If someone asks you to "Simoniz" a car, they simply mean wax it well. (It is not the same thing as SiRamik, a ceramic coating brand -- the names look alike but the products are worlds apart.)
Simoniz has been around a very long time. Long before any of us were born, they ran an advertising campaign so successful that the brand name became a synonym for waxing a car -- the way "Hoovering" stands in for vacuuming, or "Sellotape" for sticky tape. It is one of those rare cases where a product name escaped its own packaging and lodged itself in everyday English.
How a brand name became a verb
Simoniz dates back to 1910, which makes it older than most of the cars anyone alive has ever owned. For decades it was the wax to reach for, and the marketing leaned hard into the idea that a Simoniz finish was the gold standard of a well-kept car. The campaign worked so completely that "to Simoniz" stopped meaning "to use this particular tin" and started meaning "to wax, and to wax properly". That is about as deep into the culture as a car-care brand can get.
It is rare these days, but every so often an older customer will still ring up and ask us to "Simoniz" their car. Tom, our operations manager, fields most of these calls, and he has learned to read between the lines: nine times out of ten the person is not asking for a specific product at all, they are asking for the thing their dad did on a Sunday with a tin and a cloth. They want the car to look properly looked-after. We are happy to oblige -- though what we actually reach for has moved on a fair bit from a tin of paste.
The brand made such a mark on popular culture that there is even a joke built around the word, one we could not possibly repeat here because it is not remotely politically correct. Ask your dad.
Simoniz is not SiRamik -- clearing up a common mix-up
Worth heading off a confusion we hear now and again: Simoniz and SiRamik are two entirely different things that happen to sound alike. Simoniz is the century-old wax-and-polish brand we are talking about here, sold on the high street and through motor factors. SiRamik is a ceramic coating brand, a modern silica-based product applied professionally. The names rhyme, the marketing both lives in the "shiny car" aisle of your imagination, and people land on one when they meant the other. If a customer rings asking about "that ceramic Simoniz stuff", that is usually the wires crossing. They are not related, not the same chemistry, and not in the same league when it comes to how long the protection lasts.
Still going, still winning awards
The brand is alive and well, still UK-based, and still makes genuinely good products. A look at their range shows they keep picking up Auto Express awards, including one for the Original Wax -- which tells you something. A century-old formula does not stay competitive on the shelf out of nostalgia alone; it stays there because it does the job.
The modern Simoniz range stretches well beyond the original tin of paste, too. Alongside the carnauba wax you will find spray sealants, "ceramic" top-up sprays, all-in-one polishes and boxed paint protection kits aimed squarely at the home user who wants something that sounds high-tech without the commitment of a professional job. These are honest enough products for what they are: easy to apply, a noticeable lift in gloss, a bit more durability than a soft wax. What they are not is a substitute for a coating that has been bonded to corrected paint in a controlled environment. A bottle that promises "ceramic protection" off the shelf is doing a lot of work with one word; it is a sealant with some silica in the blend, not the same animal as a professionally applied coating that cures hard over hours.
And here is the slightly awkward truth about traditional carnauba waxes: the modern ones make a great deal of noise about special ingredients and proprietary blends, but they are not a huge leap on from what your great-grandfather was rubbing into the family Austin. Carnauba is carnauba. A good wax fills the fine texture of the paint, throws back a warm, deep gloss, and beads water for a few weeks. That is what it did in 1910 and that is what it does now. The chemistry has been refined, the application is a little more forgiving, but the fundamental job and the fundamental limits are the same.
Where Simoniz sits against dealer-fit and professional options
It helps to picture paint protection as a ladder rather than a yes/no choice. At the bottom rung sits the retail wax or sealant you buy in a tin or bottle and apply yourself: cheap, satisfying, short-lived. A step up are the spray ceramics and protection kits, Simoniz among them, which buy you a few months instead of a few weeks. Then there is the dealer-fitted "paint protection" package, often added to a new car for a few hundred pounds at the point of sale -- frequently a sealant of broadly similar grade to what is on the shelf, applied quickly over factory paint that was never corrected first. At the top of the ladder is a professional ceramic coating: corrected paint, a hard-curing coating, measured in years.
The reason the dealer-fit tier disappoints so many people is that the price suggests the top rung while the product sits nearer the bottom. We have lost count of the cars that have come through the workshop wearing a dealer protection package the owner paid handsomely for, only to find swirl marks and water-spotting already setting in within a year, because nothing was corrected and the "coating" was a wipe-on sealant. Simoniz's own retail kits are, to their credit, honestly priced for what they deliver; the trouble starts when a similar-grade product is sold at a premium with a coating's promises attached.
What "Simoniz" can and cannot do
This is where it helps to be honest about waxing as a job rather than a brand. A coat of wax is a sacrificial layer. It sits on top of the paint, it looks lovely, and it washes away. On a car parked outside, used daily, taken through the odd automatic car wash, you are realistically looking at a few weeks of meaningful protection before the beading slackens off and the gloss starts to flatten. To keep a car genuinely "Simoniz'd" you would be reapplying every month or so, which is exactly the Sunday ritual the word grew out of.
Done by hand and done well, that is a satisfying job: wash, clay if needed, a light cleanse, then a thin even coat of wax left to haze and buffed off. Done badly -- thick wax, applied in the sun, buffed before it has cured -- you get streaks, smearing and white residue trapped in trim and badges. We see the aftermath of the second version fairly often when a car comes in for correction; wax itself does no harm, but it can paper over swirl marks and oxidation that really wanted addressing first. A wax flatters tired paint; it does not fix it.
So when someone wants that classic just-waxed look to last, the conversation usually turns to what has changed since 1910. The honest answer is: not the wax, but the alternatives sitting next to it.
Where modern protection picks up
The thing that genuinely moved the game on is not a better wax but a different chemistry altogether -- ceramic coatings, which bond to the paint rather than resting on it. Where a wax gives you weeks, a properly prepped and applied ceramic coating gives you years, with a harder surface, far better resistance to chemicals and wash marks, and water behaviour that puts even a fresh coat of carnauba to shame. It is a more involved job: the paint has to be corrected and decontaminated first, the coating applied in a controlled environment, and left to cure. That is precisely why it is workshop work rather than a Sunday-afternoon job.
None of this is a knock on Simoniz. If you enjoy the ritual, a tin of Original Wax is a fine and honest product that has earned its place for a century, and there is real pleasure in keeping a car gleaming by hand. But if what you actually want is that look without the monthly upkeep, the modern answer is a coating, not a wax. For how traditional waxes like Simoniz compare with the long-life options, see are ceramic coatings better than wax?