If your looking for something to use after tha car hads been washed an dryed look into a quick detailng spray. Can also be used to to remove light dust at a show etc.
The easist on to get hold of is the Megs Interior Quick Detailer as Halfords sell it.
Or there are lots of other ones to get online. They add Gloss and Shine after a wash, really easily, wipe on, wipe off with a cloth.
Infact catch me at the meet tommorrow I will bring some along I have gallons of the stuff!