What are ceramic coatings for cars?
A ceramic coating is a paint protection sealant that you put on your car instead of wax, which forms a thin shell of ceramic which is tough and durable, and so slick that dirt and water can't stick to it. Once cured, you are left with nothing on your car but an incredibly thin layer of ceramic. There are no waxes, oils or binding agents in it, or anything else which will burn off in the sun. It's just ceramic, which is why it lasts so long.
Beware of products that are just a wax with some ceramic thrown in, they are not the same thing and will not give your car the same protection.