Fenwick’s Frame & Shock Finishing Spray isn’t a polish so much as a protective spray designed for preserving seasonal machines and equipment in storage (e.g. Sunday best road bikes or summer-use-only tag-alongs).
It’s silicone free but includes a trace of lubricant, providing a showroom finish in seconds while safeguarding suspension and bearing seals. However, it does attract surface dirt more readily than furniture or car polishes and it can highlight any blemishes in flamboyant, metallic enamels and clear lacquers.
Nothing comes for free and to get the best from this spray you will need to roll up your sleeves, fill the wash bucket and get your bike in showroom condition. Once you can see your face reflected in the rims, apply a generous coating of Muc-off Bike Spray over the whole thing.