Short duration and very little difference in the appearance of the plastics. The only good thing is that dust does not stick.

Very good, as long as you know how to use it. I put it on my matte black tmax plastic. I wash it regularly in the washing machine and immediately afterwards, when it is clean and dry, I mix it well at home, spray it on the plastic, and immediately wipe it with a microfiber cloth in the direction of the plastic's design. I leave it there in the garage, in the shade, to dry.

After that, the plastics, especially the front mask, get dirty much more difficultly than dust, scratches, insects, etc. Usually, it catches a light dust that I simply remove with a duster that I have.

This is the way to use it