Not sure if this is common knowledge...I never heard of before anyway...
Put car into body repair shop yesterday - owner gave me the following tip on how to restore faded plastic bumpers, etc.,;
Use a small blow torch, quickly sweeping it over the plastic area (I suppose gently heating rather than setting it on fire...). It has the effect of restoring to 'as-new' black finish.
no joke - I believe this guy and will try it out...sick of buying useless sprays etc..they only last a few days..week at most..depending on weather.
Will let you know how I get on..hopefully car wont end up as a ball of fire..