Found this in the Big C for 35 THB. A fantastic cleaner! Seems like specialy made for bike(r)s, works easily and great. For nearly everything. Leather, metal, boots, plastics. Releases grease, dirt and makes a bright shinnig surface.
I've seen them use this to buff out scratches on telephone screens in the second hand phone shops. It must be very mildly abrasive, quite an interesting product.