Blistering Trim on door and center controls trim
 

I have recently bought a 2004 Boxster. a week ago I noticed what I thought was some small deposit on the hinged flap on the arm rest on the drivers door. I tried to gently rub it off only to find that it was actually the mottled 'plastic' surface layer that had a small blister. It seems that the surface layer had separated in a couple of small spots from the main body of the flap. So now I have a couple of ugly peeled spots.

I then noticed yesterday that the same is happening on the surface layer next to the softtop up-down switch which as a 1-2mm blister developing wher the surface material is lifting off the plastic underneath.

I am wondering if I have had something on my elbow and finger that has reacted with the surface layer (maybe sunblock/sunscreen??)

Being new to Porsches, I was wondering if anyone has had a similar experience. My worry is what else is ready to start blistering