There's different ways to go about it. You could do a real ceramic coating, but to do it right you need to have the car claybarred/iron-x'd/polished/and alcohol sprayed to remove the polish oil & residue, before you do the ceramic coating. Then once the coating is on the car it needs to stay dry for a couple days. I'll just say I put cquartz uk 3.0 on my last car and after 6 months I was not impressed at all. It was amazing after it had just been applied, but it barely lasted and I put a ton of time and money into it and didn't feel it was worth it.
There's the old fashion way with your traditional wax, I feel like something like collinite would do a better job than most other waxes for what you're using it for. Rejex is one I've considered trying too.
I'm more of a fan of ceramic or wax sprays. I've been using Meguiars fast finish this year and I've been pretty happy with it. Super easy to put on and wipe off. The bottle lasts quite a while as it's in an aerosol can and doesn't need a whole lot on your rag to apply it. Right now I've got a bottle of turtle wax hybrid solutions ceramic spray that I'll be trying after my next car wash. I haven't been a big turtle wax fan in a while but I've been seeing a ton of detailers raving about this stuff, so I figured I'd try it out. I've heard from detailers it keeps paint hydrophobic for about 4 months which is pretty good for it is. A lot of waxes don't even last that long and they'll take you longer to apply.
