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- There are is diffuse component. Most shaders have an ad-hoc diffuse term to approximate the soft look of hair. In reality, this soft look is caused by light scattering and is not related to a classic diffuse BRDF.
- No control over directly reflected color. Direct reflections have the same color as the incoming light. Any coloured visual features are due to light passing through a strand of hair.
Melanin
Melanin Redness
Dye Color
Specular Level
Roughness Along
Roughness Around
White Hair
This parameter controls the amount of white haire in the clump of hair. White hair has will be assigned very low melanin levels.
Synthetic Fiber
Dye Hue Variation
