Brake dust is a combination of multiple particles, some from the pads, others from the rotors or drum which work together to stop your ride.
Some of the ‘ingredients’ with brake dust include carbon, iron, ceramic materials, plastics, polymers, and even aluminum.
Since there are different materials used in brake pads and rotors/drums, the level and type of brake dust will vary significantly.
This represents a rather challenging situation and interesting question – is there a one-size-fits-all method for removing brake dust from your vehicle?
Technically and optimally speaking – the answer is a resounding hell no. But we’ll discuss that in a bit.
WHERE DOES BRAKE DUST BUILD UP ON CAR?
There are some trouble spots that tend to collect brake dust more than others. Obviously, the wheels are your leading source of brake dust collection.
Depending on the material of the brake components, and that of the surface where it's bonded, brake dust can either be a light surface dust or embed onto the material.
It’s also quite common for brake dust and other iron-based metallic debris to stick to the rear end of vehicles. This is due to a low-pressure zone that is created as a vehicle accelerates down the road.
Brake dust is no different than industrial fallout, dirt, or debris. It just sits on top of the clear coat of paint and is simple to wash away.
The longer it sits, it can begin to stick or embed itself into the material. This mainly happens on metallic surfaces, as most brake dusts are microscopic levels of ferrous-based materials or those composed of steel or iron substances.

Since many brake rotors are made from steel or iron, and some pads are semi-metallic composed of similar materials, as they create friction, electrons are stimulated and can become magnetic.
So, in order to remove brake dust that is stuck onto metal, you must get creative or introduce some chemistry. This is where those iron removal or rail dust sprays come in quite handy.
There are some that contain a color-based activator that will “change colors” on the surface, to show you it’s working.
This isn’t magic or a result of the metals “melting” – it’s just an optics-enhancer. However, it does look cool.
CAN YOU PROTECT YOUR CAR FROM BRAKE DUST?
Brake dust is a contaminant – plain and simple. It is more likely to bond with bare metal (like wheels for example) but can stick to clear coats, windshields, even headlight covers. To reduce this from happening, consider applying a high-quality coating – like GYEON MOHS+

When you use a coating, it bonds directly on top of the surface, creating a very hard protective layer.
Once it cures, that layer is ultra-smooth and flat, making the surface hydrophobic AF. This basically makes brake dust bounce off the surface, not stick to it.
It can be used on anything that is porous and solid – like wheels, body panels, headlight covers, rear spoilers, brake light covers, and even carbon fiber, vinyl and paint protection film. Basically, if it’s on your ride, you can apply a coating on top.
Brake dust is an inevitable byproduct of a mechanical function that your vehicle completes daily.
Taking proactive measures to protect your vehicle with a durable coating that repels brake dust from sticking is a smart and cost-effective way of reducing brake dust removal headaches.
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