Severe bird mess damage to paintwork -- acidic droppings etching into the clear coat. Ceramic, graphene, or polymer coating absorbs the chemical contact and protects the lacquer underneath.
Bird droppings are highly acidic and damage modern acrylic clear coats quickly -- especially if left sitting in sun. This car had an unusual degree of damage that suggested something may have been wrong with the clear coat in addition to the corrosive effect of the droppings. The exact cause is not always determinable, but the result is the same: etching in the lacquer that cannot be polished out and requires paint correction or in some cases panel refinishing.
Any protective coating reduces the risk: a wax provides some resistance if the droppings are cleaned off quickly, but a polymer sealant, graphene, or ceramic coating offers considerably more protection because the coating itself takes the initial chemical contact rather than the clear coat.
Ceramic coatings do not hide scratches or etching -- they are a few molecules thick and have nothing in them to fill damage. The prep has to be right before a coating goes on. But for preventing future bird mess damage, a well-applied ceramic is the most effective protection available.
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