Grease like substance on the interior

[TerryT]

Hi,

When I received my Boxster I noticed that the interior was covered in a 'grease like' substance. What I think happened was either a detailer or the previous owner applied this to all the plastic parts of the interior as a 'finish'. This has left the finish greasy and somewhat sticky. It is hard to show this in a photo.

Has anyone had this experience before ?
What can be done about it ?
I don't think soap and warm water is going to do the trick, any ideas ?

Thanks
Terry