Decontamination: clay bars, iron removers and why this stage is not optional
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.
You can self-diagnose whether your car needs it. After a wash, run your fingertips inside a sandwich bag across the bonnet and roof. Smooth means a light detail will do. Gritty — which describes most UAE daily drivers after a summer outdoors — means decontamination first, and any quote that jumps straight to polish or coating without it should prompt questions.