It seems lots of "pin techs" recommend using Mr Sheen to clean a playfield... still trying to work out why, as Mr Sheen is a Furniture Polish!
I'm sure polishes aren't used for cleaning...
Go with what has already been said above!
I think is is "old school" - My old man used to use it directly on playfields 30 years ago. It just goes in between the cracks and lift the paint. However, he used to use it to clean the pinballs he had applied contact to (pre mylar days), with great results.
Mr Sheen is a GREAT product to clean pinball cabinets with. I never use it on playfields - no where near as effective as shellite/Nifti/Novus2.