Ceramic coatings are long lasting, but they won't last for years without any maintenance. And they do eventually need to be reapplied.
I use
this stuff as a booster about once every two months. Lots of companies make similar products. Once a year I polish off the old coating and reapply
with this stuff. With a longer lasting coating you may only need to reapply every few years.
Not affiliated with Gyeon in any way but the linked products have worked really well for me.