detailed a clients car approx 1 month ago. its a 2010 VW jetta. on the hard plastics of the door trims, i have used protectant. on the tops of all 4 door trims, along the windows & down approx. an inch, there is a white powdery substance & the black trim has faded. below the arm rest is the same plastic, protectant also used but is fine.
can anyone tell me why this has happened? i have used protectant for years on many makes & models of cars & i have never seen this before
any help greatly appreciated