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Diffuse Color – Controls the diffuse component of the shader. Use this for materials made out of cloth threads or other non-translucent fibers, as well as for dirty hair.  Note that clean hair or fur  does not  normally have a diffuse component, so in that case leave the parameter black.  

Diffuse Amount  – The amount for the diffuse component of the material.

UI Text Box

Note that real-world hair or fur does not have a diffuse component. Although the diffuse parameter allows for some artistic control, for realistic results it is best to disable it by leaving the Diffuse Color black.



The primary specular component corresponds to light that is reflected off the outer surface of hair strands (see the figure above).