AutoglymMagma Liquid Clay, 500ml - Colour Transform Technology Bodywork and Wheel Fallout Remover, Removes Stubborn Iron Specks From Car Bodywork, Brake Discs, Car Wheel Cleaner

Great product, and it works. Thought I might have to cut and polish the rear of my car because of stubborn iron deposits and grime, but hey, sprayed on as instructions, left for a short time, turned purple, jet washed off and washed with car shampoo. Total delight.

Magma is designed to break down iron particles embedded in paint and wheels—brake dust, rail dust, and airborne fallout. Spray it on a clean, cool surface and watch it react visibly, turning purple where iron is present. It works on body panels, alloys, and glass, and rinses clean with a pressure washer or hose.It’s pH neutral, so safe for clear coats and sealants. Unlike clay bars, it doesn’t scratch or require manual rubbing. It’s especially effective on white or light-coloured cars, where iron spots are more visible. On wheels, it foams slightly and lifts grime without needing heavy agitation12.✅ ProsColour transform tech—shows exactly where iron is breaking downSafe on paint and wheels—pH neutral, non-abrasiveMild scent—less offensive than typical iron removersEffective on first pass—often no need to reapplyPreps surface for wax/sealant—smooth finish after useCan be used on glass—removes embedded particles⚠️ ConsNot a clay substitute for tar—may need separate tar removerAvoid brake discs—can degrade surface if left too long1Don’t apply in sunlight—can dry and leave residue2Nozzle can clog—rinse after usePremium price—around £10–£12 for 500ml🧍‍♂️ Personal VerdictUsed this on a white Qashqai and alloy wheels—purple reaction kicked in fast, rinsed clean, and left the paint feeling smooth. For under £12, it’s a proper tool for deep cleaning before waxing or sealing.

This liquid clay works really well at removing stubborn surface contaminants from my car’s paint. It glides smoothly, is easy to apply, and leaves the paint feeling silky and clean. A little goes a long way, and it definitely improves the finish before waxing. Highly recommend for anyone looking to get a professional-level clean at home.

Absolutely fantastic stuff.I've used this on several cars now.The only downside is, it's expensive and I bottle will on down for example a VW Polo..I still definitely recommend 👌

This stuff really does the job. My wheels were encrusted with brake dust and just a quick spray removed most of it. Another spray and a little scrub with a tooth brush and my wheels are like new. Hardly any effort required at all.

Great for decontaminating paintwork when prepping for polish and protection.Don’t bother using it for wheels it’s a waste of its use IMO. Better off with a dedicated wheel fallout remover.

Even after reading all the positive reviews I still felt skeptical going into using this product... was it really going to be THAT good?! But it was! I have recently purchased a VW Beetle that was bought from a garage located very near a railway line and was also off a busy road which also had a building site across from it. It was literally covered in little rust spots from iron particles and had quite a rough gritty feel to the paintwork. This product worked wonders and the paintwork now feels as smooth as silk. It removed the vast majority of the rust spots, a second use will be needed to get a few more stubborn ones, but overall it's changed the quality of the bodywork massively. I would highly recommend this product and will buy it again myself. Just note that if the product gets onto your skin it leaves an unpleasant smell which is hard to remove.

AutoGlym Magma,A solid product that get rid of ingrained dirt of the bodywork and wheels.I personally just sprayed the solution on the panel or wheels and left to dwell for a couple of minutes before washing off.I would say this doesn't replace the liquid clay however, it does do the job its states and its pretty much effortless to use so to some its less effort and i was impressed with the results.I should state this is to be used after the car is cleaned.Overall a quick spray is all that's needed, i liked the results and felt it was good value.