Base
Use this setting to define the color of the plastic.
Here you can select from Styrofoam (plastic made up of tiny foam spheres), Polyurethane (e.g., industrial foam) or ABS (common hard plastic). Various Noises and their scaling will be modified and superimposed over the Color.
The various types of plastic have different structures that are calculated using an internal Noise. This setting defines the strength with which this Noise is visible. If set to 0%, the structure will be disabled.
This setting defines the sharpness of the reflection (or of the matte effect). If set to 0%, the material will reflect like a mirror and the higher the value, the more matte the surface will appear.
Set this value to greater than 0% to add an Ambient Occlusion effect. Small values will disable the respective effect, larger values will strengthen the effect correspondingly