I was curious to see what was out there...
In the auto business I see tons of stuff.. some better than others...
The new RV's with a full paint can benefit from newer ceramic coats then maintaince spray and wipes every 6 months or so...
The spray waxes and wash and waxes are nice provided you a clean or polished surfaces to start with..
Older RV with the 70-80% gloss fiberpanels or raps need some elbow grease, a good cleaner polish and maybe some rubbin...
95% of the professional stuff I see or get brought into the shop by reps etc.. requires a cleaned surface by light machine polishing etc, then application of their wax/sealant..
Most need to set for a few hours to overnite..then a final spray on seal coat. They last generally 6 months to a year provided they are cleaned and re sealed now and then.. A few go yearly in some climates..
I like these guys
https://gliptone.com/
https://www.chemicalguys.com/
sampled this
https://www.glare.com/products?cid=Mg%3D%3D&pn=Aviation I never followed up, worked well
goodluck many good ones out there