Decontamination: clay bars, iron removers and why this stage is not optional
Before any polishing or coating, the paint has to be genuinely clean at a microscopic level, and in the UAE that takes chemistry as well as washing. Iron remover is sprayed on and turns purple as it dissolves embedded ferrous particles — brake dust and industrial fallout that has burrowed into the hot, soft clearcoat. Tar remover handles the black speckling along the lower doors that every car collects from fresh asphalt patches on the highways. What remains is lifted mechanically with a clay bar or clay mitt, which shears bonded particles off the surface as it glides over lubricant.
Skipping this stage is one of the most common corners cut in cheap packages, and it matters more here than almost anywhere. Ceramic coatings bond to the clearcoat at a molecular level; applied over contamination, they bond to the dirt instead and fail early — usually showing up as patchy water behaviour within a couple of months. If you are paying for a coating in the AED 1,000–2,500 bracket, roughly half the labour value should be sitting in the wash, decontamination and prep, not the ten minutes of actual coating application.