I think that was his trick. But I'm not sure, it's a long, long time ago. The drawback, of course, is the amount of polygons; doubled. Though I think it could be used to fake subsurface scattering. Those muscle maps from DAZ on the inner figure, with some ambience and displacement, a normal skin texture on the outer figure, slightly transparent, could work.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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