Found the fresnel-reflection button at the EZSkin script.

Render times jumped up but still bearable.

IDL only light inside Bagginsbill's envirosphere. No other lights.

I need to edit out the highlights on the forehead as in this setting they are distracting.

As I said, not really my cup of tea, but I will definitely experiment further.

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"Is there a ground?"

Nope, not in my empty scene. Usually I find the self lightning of the skin caused by IDL too strong. Perhaps because the skin I use is very light unlike the many "caucasian" skins sold that are really closer to mediteranian to my eyes.

It started as a V2 skin that I converted to V3 and I raised the gamma value quite a bit to get the lightness I needed.