Quick spray-on shine?

[Kitchski]

Hi all,

Venturing into here for the first time. I'm not really into cleaning cars etc, but I've got something I need to do with my car on Wednesday, and it needs to look shiney and nice for the day. It's just a one day thing, it can go back to looking old and tired the rest of the week! Ideally I'd apply it tomorrow and then be able to leave it a few days.
I know if I sprayed the whole car with, for example, WD40 (don't worry, I'm not) it would make the faded paint red again, the dull blacks deep black and shiney again....that kind of thing. I've seen products in Halfords that seem to suggest they do the same kind of job, only purpose designed. Can anybody recommend something?

Basically a product I can cover an entire car with and make it look as good as it does wet, only when it's dry

Thanks

[Kitchski]

Cheers. I've given it a wash, and it was polished last year. Hasn't been outside since so hasn't faded too badly. The paint is bloody awful on it, but I was just hoping to find something that could gloss over it all temporarily. I'll look that stuff up, cheers.