Tyre wall tart up

Was chatting to a guy in work today, he ownes a Very tidy MR2.

always gleaming so obviously the conversation got onto cleaning.

Autoglym all the way by the sounds of things
super resin - Body
window cleaner - Window (Doh)
Upholstery cleaner - Interior
Alloys - cleans them waxes

Tyres, I asked what he used to keep his tyre walls in top condition............
Autoglym tyre wall......nope
any tyre wall product.....nope
the product he used and has been using for 15years..........shoe polish!

Thought that was nuts but when you look at his tyres, it must work.