Zymol's Japon has been around for some time now. Good stuff, and you cannot go wrong with it. If you really want to see how the pros do it, and if you want to engage in detailing yourself (warning: detailing can become habitual and expensive) here is a great site:
Detailing Bliss
Also, Paul Dalton is considered one of the world's top detailers. Here's his site :
Miracle Detail 
P.S. Paul is member of Detailing Bliss and occasionally has someone post for him there. Also, I am somewhat surprised that we do not any detailing vendors signed-on here.