SONAX XTREME Foam+Seal "Foam Sealant" car shampoo with sealant 1000ml

Wash and seal at the same time — with SONAX XTREME Foam+Seal foam sealant

What does SONAX XTREME Foam+Seal do? This 2-in-1 sealant shampoo with a foam formula cleans gently, tops up existing sealants, gives you a beading effect and speeds up drying — for foam lance and FoamSprayer.

A normal car shampoo cleans the car — and that's where the job ends. What if you could build a protective layer on the paint, or top up an existing sealant, while you wash? That's exactly what SONAX XTREME Foam+Seal promises: a sealant shampoo that lays a thick foam blanket over the car, lifts dirt, brings back maximum gloss and leaves behind a water- and dirt-repellent protective layer — all in a single wash step. The result: a clean car with a beading effect that also dries faster once you're done.

• Cleans and seals in one step. Foam shampoo and sealant at the same time means no separate step with wax or a spray sealant after the wash. The sealant component settles onto the paint as you work and forms a hydrophobic protective layer — simple, efficient, no extra effort.
• Beading effect and faster drying. The sealant layer that gets laid down makes water bead up. That's not just great to look at — it also cuts down on limescale spots from standing water and makes drying with a towel far quicker. The special drying formula speeds things up on top of that.
• Tops up existing sealants. If you've already protected your car with a coating or a polymer sealant, Foam+Seal works as a maintenance shampoo: the sealant components add to and reactivate the existing protective layer with every wash — no fiddly aftercare.

Detailing1's tip from the shop: Foam+Seal shows its full effect when you let the foam dwell on the car for a few minutes before you go in with the wash mitt. That gives the sealant component time to settle evenly across the paint. Then rinse well — standing soap residue gets in the way of an even protective layer. For the best results, dry the car straight after the wash.

Sealant shampoo technology — how washing and sealing work together

The idea behind SONAX XTREME Foam+Seal sounds like a contradiction at first: a shampoo cleans — and in cleaning, it strips away whatever's sitting on the paint. So how can it build a protective layer at the same time? The answer is in the formulation. The sealant shampoo carries two active complexes: a surfactant-based cleaning block that lifts and emulsifies dirt, plus a polymer protection component that settles onto the paint on contact — independent of the cleaning process. Dirt and protective polymer cling to different surfaces and don't get in each other's way.

The foam is the carrier for both components. It spreads the cleaning surfactants and the sealant polymers evenly across the car — even into spots the wash mitt never touches, deep in door handles, along spoiler edges or in panel gaps. After rinsing, the surfactants wash away with the water; the sealant polymers stay bonded to the paint and form a thin, even protective layer.

This protective layer isn't in the same league as a full polymer sealant or a ceramic coating — the film is thinner and it doesn't last as long. What Foam+Seal does is refresh the protection on a regular basis: treat the car every second or third wash with Foam+Seal and you keep a continuous base sealant on the paint that fends off the weather, dirt build-up and UV far better than unprotected paint.

Foam+Seal is especially interesting for cars that already run a coating. A lot of coating makers recommend specific maintenance shampoos that won't smother the coating surface with wax. Foam+Seal contains no carnauba wax components that could work against coatings — it's a pure polymer maintenance product and therefore coating-safe.

Another plus over separate products: if you've been washing first and then topping up with a spray wax or quick detailer, Foam+Seal saves you that second step. The time you save per wash is small — maybe 10–15 minutes — but over a year it's a noticeable relief in looking after the car, without giving up any protection. That makes it especially appealing for owners who wash consistently but don't want to get deep into detailing products.

Using Foam+Seal properly — foam lance, FoamSprayer and the right dwell time

For the best result, apply it through a foam lance on a pressure washer. Fill the concentrate into the reservoir per the maker's instructions, cover the whole car in foam and let it dwell for 3–5 minutes. Then go over it with a soft wash mitt or sponge — the foam in the mitt cuts friction and protects the paint. After that, rinse thoroughly with clean water.

The hand FoamSprayer is the option without a pressure washer. It produces a fine foam that you apply straight to the car and work in with the mitt. Cleaning power is comparable; the foam blanket is a touch less dense than with the foam lance, but that doesn't matter for the sealing — the polymers settle regardless of how dense the foam is.

If you want maximum sealing, give the car a quick rinse with clean water after washing and dry it straight away with a nanofibre drying towel — no aftercare. The protective layer is already on the paint at this point. Drying activates the sealant polymers and spreads them evenly. A car that's simply left to air-dry after a Foam+Seal wash already shows the beading effect as it dries: water pulls into droplets instead of sitting flat across the paint.

As for application temperature: like all sealant products, the car shouldn't be treated when it's too hot or in frost. The sweet spot is between 10 and 30 degrees Celsius. In high outdoor temperatures or direct sun the foam dries too fast — the polymers then settle unevenly. Pick the shade or the cooler hours of the day for the best results. In frost, skip the product, because the polymers don't cure properly at low temperatures.

A practical question about yield: how many washes do you get from a bottle? That depends on the size of the car and your setup. As a rule of thumb: at a normal dose for the foam lance, a standard bottle lasts well over ten full car washes — economical enough to run Foam+Seal as a regular everyday shampoo without thinking about the cost every time you wash.

Beading effect and protection — what Foam+Seal does day-to-day

The first time you work with a sealant shampoo like Foam+Seal, you'll often spot an immediate beading effect after the wash. Water beads off the paint in little balls — the lotus effect of the polymer protective layer you've just applied is there right after the first wash. That effect is moderate at first and builds up over several washes with regular use: use Foam+Seal consistently and over time you accumulate a thicker polymer film on the paint that beads harder and harder.

The drying formula is a detail that makes more difference day-to-day than you'd expect. You know the drill: car washed, now comes the drying — ten minutes with the towel until every panel is dry and streak-free. With the sealant layer down and the drying formula speeding things along, water runs off quicker; less of a water film stays on the paint and drying with the towel takes far less time. A small thing, but if you wash regularly you'll take every bit of saved time.

Important: Foam+Seal is no replacement for a full polymer sealant or a ceramic coating. The protective layer the shampoo builds with each wash is thin and holds up under normal conditions between washes. If you want lasting protection that holds for months or more, you need a dedicated sealant. Foam+Seal is the right product for the care between full sealant jobs — it maintains the protection a base sealant has built.

A common misunderstanding: if the beading eases off after a few weeks without a wash, that doesn't mean the protection is gone. The thin polymer film is still there, just knocked back by dirt, water spots and UV. Another wash with Foam+Seal brings the beading effect straight back, because fresh polymers go onto the cleaned surface. That's the difference from "using up" a full sealant: Foam+Seal goes on fresh with every wash and builds itself back up.

Sealant shampoo compared — Foam+Seal, Reload Shampoo and Ceramic Active-Shampoo

The SONAX XTREME line-up has several shampoos with added protection. The PROFILINE Reload Shampoo is a sealant shampoo from the PROFILINE range and is aimed at pros who want a stronger sealant component in the shampoo — it tops up professional coatings and is built for long durability. Foam+Seal, by contrast, is more broadly accessible and made for the everyday owner who just wants to build protection simply and without extra effort.

The XTREME Ceramic Active-Shampoo contains ceramic actives and suits cars with existing ceramic coatings especially well — it activates and tops up the ceramic surface with every wash. Foam+Seal uses polymer actives with no ceramic content, which makes it the more universal product — including for cars that aren't ceramic-sealed or have no existing sealant at all.

For cars with a fresh ceramic seal we recommend the Ceramic Active-Shampoo for maintenance. For everything else — unsealed, wax-sealed or polymer-sealed — Foam+Seal is the most effective and easiest way to build and keep protection with every wash.

Another product from a different category worth comparing is the classic spray wax, applied to the still-wet car after the wash. These often give a slightly stronger gloss and a thicker protective layer per application — but they need an extra step and an extra product. Foam+Seal makes exactly that unnecessary. Choosing between a spray wax after the wash and Foam+Seal as your wash shampoo comes down to whether you want the extra work or not. Both are valid — Foam+Seal is the more convenient one, spray wax potentially the more intense.

Buying a sealant shampoo — who SONAX XTREME Foam+Seal is worth it for

SONAX XTREME Foam+Seal is ideal for owners who want to make their car care as efficient as possible: wash and protect at the same time, with no separate sealing step to plan in. It makes particular sense for drivers who wash their car weekly or every two weeks — the cumulative effect of the polymers gets noticeably better with regular use.

For cars without an existing full sealant, Foam+Seal is an easy way into sealant care: no polisher needed, no involved coating, no cure times. Just use it in your normal wash and build a base protective layer every time. The result isn't in the league of a top-tier ceramic coating — but it's far better than no protection at all, with the least possible extra effort.

For new cars or freshly polished ones, Foam+Seal is an excellent way to protect the paint's good condition from the start, without a full sealing job. Fresh paint has no baked-in damage yet and benefits right away from protection against UV, bird droppings and industrial fallout that attack the surface with regular use. With consistent Foam+Seal use the paint stays in a condition that, even after years, is clearly better than a fully unprotected car with the same mileage.

The workflow that makes sense: use Foam+Seal as your regular wash shampoo, and every two to three months add a fuller protection treatment — like the SONAX XTREME Ceramic spray sealant after the wash, or a quick coating. Foam+Seal keeps the base protective layer up; the top-up treatment strengthens the protection at regular intervals. It's a practical, cheap and effective alternative to an expensive full sealant for anyone who wants to protect their paint for the long haul but doesn't fancy polishing and sealing every weekend.

So if you want the best of both worlds — steady protection built through regular washing, backed up by the odd full seal — Foam+Seal as your everyday shampoo gives you a reliable base. Combining washing and protecting in one step saves time, money and effort, without dropping the protection to zero. For that use case, Foam+Seal is the sealant principle made practical: a little bit better with every wash.

This sealant shampoo is therefore one of the smartest calls for anyone who wants to make a lasting difference to their car's protection status with a single change to the wash workflow — off the normal shampoo, onto the sealant shampoo. No extra product, no extra step, no learning curve. Just swap out the old shampoo and build in protection from the first wash. That makes Foam+Seal one of the most valuable everyday products in the detailing line-up — not because it's the strongest product, but because it's the most consistent.

A final tip: start with a thorough deep-clean of the car before you use Foam+Seal for the first time — the sealant polymers settle more evenly and bond better on cleanly washed paint than on paint loaded with residue. Decontaminate and clean the car once before your first Foam+Seal wash and you start with an ideal base for continuous protection. After just the first three or four washes with Foam+Seal you'll see the difference: a beading effect that builds, water that runs off faster and paint that looks fresh and clean far longer after the rain than it used to.