Hey guys; I've been looking into this ceramic coating and found some interesting opinions on YouTube from those who do detailing for a living and also do comparison tests. Not scientific but very real world.
Two products have risen to the top from what I've seen. The Meguiars Hybrid Ceramic Wax and Sonax. All require a good clean and prepped surface of course. These two spray on products are actually water activated so after the first time putting a base layer by wetting the vehicle, spraying the product on, then using a microfiber towel to dry and push the product into the pores of the clear coat; you just spray the product onto the vehicle just after the rinse when washing the car. Give it a minute or maybe just 15 seconds to activate then spray off - preferably using a power washer which are so cheap anyone can have one.
Dry as usual. Redo every 4-6 months depending on how much rain, sun, snow etc it's exposed to. Figure twice a year for a bottle that cost $15-22 and will last years.
For those who have a car that needs more prep than they are willing to do; pay a detailer $100-150 to do it but don't pay the extra cost of applying the expensive Ceramic Coating. Apply one of these or several other similar products that have come to market recently. I'm sure there will be more. I plan on trying the Meguiar's personally.
meguiar's hybrid ceramic wax/results?search_query=meguiar's hybrid ceramic wax - YouTube