The correction itself is permanent — the defects that were removed are gone and they do not come back. What is not permanent is the paint staying that way, because every wash and every week on the street puts new marks in.
So the honest answer is: it lasts as long as you avoid re-damaging it. A corrected car that is hand washed correctly and kept protected can look excellent for years. The same car through a tunnel wash every fortnight is visibly swirled again inside a year.
This is why we sell correction bundled with protection rather than on its own. The protection is what turns a one-day result into a multi-year one.
There is a real difference between the process being permanent and the outcome being permanent, and it is where most of the confusion around this question lives.
Machine polishing removes clear coat to level the surface. Once a swirl has been polished out, that specific groove is physically gone. Nothing brings it back. In that sense correction is as permanent as anything in detailing gets.
But your paint is not in a museum. Every contact with it — wash mitts, drying towels, wind-blown grit, a jacket zip, a bag put down on the boot — has the potential to leave a new mark. Swirl marks are not a condition your car has; they are an accumulation of events. Correcting resets the count to near zero and the counting starts again immediately.
The variable you control is how fast it counts back up. Two things dominate that: whether there is a sacrificial layer on the paint, and how the car gets washed.
Not a guarantee — a realistic picture based on what actually happens to cars, which we would rather give you than a number we cannot stand behind.
| What happens after the correction | How it looks in a year |
|---|---|
| Tunnel washes every couple of weeks | Visibly swirled again. The correction is effectively undone. |
| Hand washed carelessly, one bucket, old towels | Noticeably hazed under direct light, though better than before. |
| Correct two-bucket hand washing, no protection | Good, with light marring starting to show. Bare clear coat marks more easily. |
| Correct hand washing plus a 12-month sealant | Still looks corrected. Sealant is due for renewal. |
| Correct hand washing plus a 5-year Gtechniq coating | Still looks corrected, and washing is easier than it was before. |
The pattern is consistent: method matters more than product, and protection buys margin for the days when method slips.
This is the question that should shape how you think about correction longevity, and it is rarely asked.
A factory clear coat is roughly 40 to 60 microns. Each correction stage removes a measured amount of it. In practice a well-kept factory finish can support a couple of full corrections across its life, and a light one-step several times over. Beyond that you risk running the clear coat too thin to protect the color underneath, which is a failure no product reverses.
That reframes the value of protection. Keeping a corrected finish protected does not just save you money on the next correction — it saves clear coat, which is a resource your car has a fixed amount of.
It is also why we measure rather than assume, and why a car that has been corrected by previous owners may get a more conservative recommendation than its swirls alone would suggest.
If you have paid for correction, the highest-value thing you can do next is change how the car is washed. Two buckets, wheels first with separate tools, straight lines, clean plush drying towels, no tunnels.
If doing that yourself is not realistic — and in a city where most people have no driveway and no hose, it often is not — a maintenance wash on a regular rhythm at your address is the practical version.
More short answers live on the FAQ.
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That is the whole formula. We can do both, at your address, on a schedule that suits you.