Yes I had a similar thing on our car but wouldn't bother again (the williams one).I think next time I'll just take it to a hand car wash and get them to do an autoglym polymer sealant on it.The web site for the product I had applied
The sales Blurb:
"Ceramic Coat can be applied to your vehicle leaving an extremely durable and high-gloss finish which prevents pollutants from impacting your car’s paintwork.
Once treated with Ceramic Coat your paintwork is guaranteed for 5 years and you will never have to polish it again. Some paint protection products require the use of an ‘enhancer’ to maintain both the gloss shine and the lifetime guarantee. Ceramic Coat does not; all you need do to re-validate the guarantee is to have your vehicle inspected by the selling dealer after five years. In the unlikely event they find any problems with the coat, they will reapply Ceramic Coat*.
Without Ceramic Coat protection your paintwork could be become dull and faded over time, when exposed to atmospheric pollutants and harsh car wash chemicals. The paintwork will progressively fade and hold dirt meaning cleaning and washing will become harder."
Is it better than just to Wax your car regularly, I suspect there is an argument for and against, but if I don't have to Wax the MoHo...Happy days I have other cars that I can spend my time waxing
I was querying the use of the term "ceramic" as I don't see how it can really be ceramic as such (it could have ceramic particles in but that would be abrasive).
A ceramic is an inorganic non-metallic solid made up of either metal or non-metal compounds that have been shaped and then hardened by heating to high temperatures. In general, they are hard, corrosion-resistant and brittle.
I suspect its marketing talk for durable (and expensive!)