Ceramic Coatings need to be appropriately layered. The more layers you apply, the more protection and longer the ceramic coating will last.
The main ingredient in ceramic coatings is Silicon Dioxide (SiO2), which is measured by percentages. The higher the SiO2 percentage, the stronger and durable the coating becomes.
Most of the time, 2 ceramic coating layers along with a top coat layer is all you need. It delivers the safety you require against scratches and abrasions, as well as the protection you seek against ultraviolet, gives off the great glossy look.