The Subsurface Scattering material settings are organized in Basic and Advancedmodes. You can switch the mode from the toggle button under the Preview Swatch.
From the Add Attribute button,you can select additional attributes that can add up to the appearance of the material. For more information, see the Attributes section.
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Holding down Ctrl while having the Add Attribute menu open, allows selecting multiple entries without closing the dropdown.
The context menu of the Color slot provides options to Copy and Paste, as well as to Reset the color.
A Resetoption is provided in the context menu of each Number Slider. You can reset the slider value to the default one.
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Some of the parameters are available only in Advanced mode.
Scale – Additionally scales the subsurface scattering radius. Normally, Subsurface Scattering takes the project units into account when calculating the subsurface scattering effect. However, if the project was not modeled to scale, this parameter can be used to adjust the effect.For more information, see the Scale example below.
Index of Refraction – Specifies the index of refraction for the material. Most water-based materials like skin have IOR of about 1.3.
Overall Color – Controls the overall coloration for the material. This color serves as a filter for both the diffuse and the sub-surface component.
Opacity – Specifies how opaque or transparent the material is.
