How to Care for Paint Protection Film

Paint protection film is the only product on your car that protects the paint by sacrificing itself. Which means the film is the thing that now needs looking after — and almost nothing sold for paint is formulated for it.

Somebody asked us this week whether the Car Care Chemistry Handbook could cover caring for film with the products we actually sell. Fair question, and a bigger one than it looks, because most PPF care advice is written by people who sell film rather than people who wash it every week.

This is the routine we run in the studio in Heidelberg West, with the reasoning behind each step and the dilutions off Labocosmetica's own data sheets.

Film going onto a Porsche in our Heidelberg West studio. Everything that happens to it after this day is what decides how long it stays optically clear.

What paint protection film actually is

Film is thermoplastic polyurethane. Polyurethane is an elastomer — it stretches, absorbs impact and returns to shape, which is exactly why it stops a stone chip that would have cratered your paint. On top of that base layer sits an elastomeric topcoat with self-healing behaviour: heat gives the polymer chains enough mobility to flow back over a light scratch and close it.

Every useful property of the film is also its weakness. It is softer than clearcoat, so it marks more easily under a mitt. It is thermo-sensitive, so it responds to heat and chemistry in ways paint does not. It has a physical edge where the film stops and the panel continues, and that edge can be lifted. And because the surface is more open than a baked clearcoat, it takes fine contamination in and holds it — which is why neglected film goes grey rather than simply dirty.

Film doesn't fail like paint fails. It hazes, it stains from the inside, and it lifts at the edges — three problems paint never has.

None of that is a reason to be nervous about owning it. It is a reason to use products built for film, in an order that makes sense.

Are you coating the film, or not?

Settle this before you think about shampoo, because it changes the routine that follows.

The film makers themselves say to seal it. Feynlab — whose PPF Flex we fit — ship a 30 ml bottle of their PPF & Vinyl Ceramic V3 coating inside every full roll of film. The film manufacturer puts the coating in the box. That is not a detailer upselling you; it is the maker's own view of what a finished installation looks like. A film with nothing on top has its topcoat doing all the work against UV, bore water, bird acid and road salt.

But a coating made for paint is not automatically the right coating for film.

ARMORIUS comes in a gloss version and a matt version, and the distinction matters more than people expect: anything that adds gloss will patch a satin finish, and a patchy satin bonnet looks far worse than a dirty one. Application is a thin, level layer, a one-to-two-minute flash, a gentle buff, then twelve hours away from moisture and about seven days to full cure — which is why we apply it in the studio rather than sell it as a DIY bottle.

ARMORIUS Gloss — for clear and gloss film. Deepens reflections without looking artificial.

ARMORIUS Matt — protects satin and matte film without adding any gloss.

Polishing belongs before the film, never after. This is paint correction on a Porsche in the hours before installation — the last time a machine should ever touch that car's surface.

If you decide against coating, you are not stuck. You just move the protection into the wash itself, which is the entire point of the shampoo below.

What to do with brand new film

The weekly wash: two steps, ten minutes

Labocosmetica call this the 2pH+ cycle — an alkaline TFR followed by a contact wash, built specifically for film rather than borrowed from the paint range. Step one is always LÌBERA. Step two is your choice of two shampoos, and which one you pick is the only real decision in the whole routine.

Step one — LÌBERA. An alkaline TFR developed for film rather than paint. VDA certified.

Step two — REVÌTAX. Neutral pH, and it leaves siloxanes behind as you wash.

Step one: the pre-wash

LÌBERA's point of difference is cleaning power at low alkalinity — it comes from Labocosmetica's T-7V surfactant blend rather than from brute pH, and it is the first TFR to carry VDA certification. Car cool, out of the sun, diluted around 1:20 for heavy road film. Mist it onto dry bodywork bottom to top with a pump sprayer, give it three to six minutes, never let it dry, then rinse at high pressure bottom to top.

Everything this step removes is grit that never gets dragged across the film by a mitt. Dragged grit is where nearly all film marring comes from.

Step two: the contact wash — REVÌTAX or RENOVA

REVÌTAX is neutral pH on Labocosmetica's own data sheet, so it cleans without stripping whatever protection is already there, and it carries solubilised siloxanes that anchor to the surface as you wash. In practice, every wash tops the film's beading and slickness back up instead of slowly wearing it down. Labocosmetica list PPF among its compatible materials and rate the beading and sheeting at up to four months, with maximum protection eight hours after application — so keep the car dry overnight if you can.

Three buckets: wash, rinse, wheels. Plush mitt, straight lines, top down, one panel at a time. Then dry with a blower, or a plush towel laid on and lifted rather than pressed and dragged.

The alternative is RENOVA, and it is not a once-a-season product. This is worth being clear about, because it gets written up everywhere as a deep-clean treatment. Labocosmetica describe it as the first acidic-pH traffic film remover shampoo on the market, with a dual application mode — a cosmetic maintenance shampoo, or an intensive localised treatment — and they specify that at dilutions between 1:5 and 1:50 it does not require an alkaline cleaner in the preliminary phase at all. It is highly lubricated by design: a dense foam that reduces friction and the micro-abrasion risk that comes with washing film. VDA certified for thermo-sensitive surfaces, satin film included.

So the honest answer to "which shampoo?" is: REVÌTAX when you want protection topped up as you wash, RENOVA when the car sees mineral contamination — hard water, sprinklers, coastal air, a dusty commute. Both are contact washes you can use every single week. RENOVA at 1:50 will also carry the whole wash on its own if you're short on time and skipping the pre-wash.

Wash with the acid shampoo every time and nothing ever gets the chance to build up in the film. The film simply stays clean.

That is the part worth understanding. Film goes grey because contamination accumulates in it slowly, over months, faster than a neutral shampoo can take it back out. Run RENOVA as your regular contact wash and you are removing mineral residue at the same rate the road deposits it — so the film never reaches the dull stage at all, and the corrective products further down this page become something you rarely need rather than something you plan for.

SÀTINO — the matte and satin swap for REVÌTAX. No gloss agents, nothing to patch.

The half of the dirt a neutral shampoo can't reach

An alkaline pre-wash and a neutral shampoo will handle organic soiling all day: road film, oils, insects, exhaust residue. What they will not touch is mineral. Water spots, limescale from sprinklers and bore water, and atmospheric fallout are inorganic, and they need the other end of the pH scale.

On paint you would reach for PURÌFICA. On film you reach for RENOVA — Labocosmetica's own comparison is that PURÌFICA is a descaling shampoo for neglected paint, while RENOVA was developed to penetrate film that has absorbed traffic film and contamination into its thermo-sensitive structure. Different job, different product, same idea.

RENOVA — the acid half. Water spots, limescale and mineral fallout.

LIMPIA — the deep cleanse. Ready to use, no solvents, no rinse.

The chemistry doing the work is ethoxylated surfactants, chelating agents and anti-redeposition stabilisers, which is why it lifts mineral residue out of the film's micro-pores instead of just scrubbing the surface. As light routine maintenance it goes in at 1:200 — five millilitres in a litre, by mitt onto an already wet surface, then rinsed. At 1:50 it becomes the whole wash.

When film looks dull rather than dirty

This is the failure owners describe as "the film has gone grey", and it is largely preventable — it is what happens when mineral contamination goes years without being addressed. But once it is there, washing harder makes it worse. The contamination isn't sitting on the surface — it's in the micro-layers of the topcoat, drawn in over months of heat cycling. Scrubbing only marks the film; solvents dry it out.

LIMPIA is built for that specific problem. It works by capillary action, drawing embedded grime back out of the film, with no solvents and no abrasives, so the elasticity and clarity of the topcoat are left alone. Ready to use: shake, spray onto the film, wipe with a clean microfibre. No rinsing, no equipment, safe indoors and safe waterless — which makes it the one product here you can use in an apartment car park. Seasonally, before a coating, or whenever the film looks flat.

For bugs, sap and tar the rule is blunt: get them off as soon as you can, while they are still soft. A dedicated PPF-safe cleaner first, and for a stubborn stain a 50/50 mix of isopropyl alcohol and water on the towel rather than sprayed at the panel, kept off the surrounding paint. What you avoid is the whole aisle of solvent-heavy tar removers, and any wax or polish carrying dyes, abrasive compounds or petroleum solvents.

Why we don't clay or polish film

Self-healing is not a property of the film. It is a property of the topcoat — a thin outer layer carrying polymers with a memory effect, which flow back into position when they are warmed. Feynlab describe exactly that on PPF Flex. Everything the film does at its surface — healing, water beading, stain resistance — lives in that one layer.

Which sets a hard boundary, and STEK state it plainly in their own FAQ: a scratch that penetrates the topcoat will not self-heal. Past that layer there is nothing to recover. They make the same point about automatic washes, which raise the odds of a scratch going deep enough to cross it.

Every abrasive pass spends topcoat you cannot put back, and the self-healing goes with it.

That is the whole argument against reaching for a machine. Pioneer, who manufacture film, put it in writing: from a manufacturer's standpoint polishing PPF is generally not recommended, because it can damage the protective topcoat, and once that layer is compromised the film can lose some of its self-healing, its hydrophobic performance and its resistance to staining. Polishing paint costs you clearcoat you can spare. Polishing film costs you the function you paid for.

Clay is the same argument in slower motion. A clay bar works by shearing bonded contamination off the surface — mechanical, not chemical — and it is being dragged across an elastomeric topcoat that is softer than the clearcoat it sits on. It is not a catastrophe, and plenty of shops do it. But it spends a little of the same finite layer, and on film there is a chemical route to the same result: RENOVA on the mineral contamination, LIMPIA on what has soaked into the film. Neither touches the surface at all.

Wheels off, arches open. Film runs into places a pressure washer should never be pointed — the edges are the whole game.

What actually kills film

What we'd actually put on your car

All of it sits together in the PPF and wrap care collection, alongside the Feynlab PPF Flex film itself.

Filmed cars back in for maintenance. Most of the film damage we see didn't come off the road — it came from a well-meaning owner with the wrong bottle.

The PPF & Wrap Aftercare Kit — LÌBERA, REVÌTAX and the three microfibres we hand our own film customers. A$154.95, against A$161.80 bought separately.