Y-Phil posted at 2:00 AM Fri, 20 October 2023 - #4476532

DeeceyArt posted at 4:58 PM Thu, 19 October 2023 - #4476529

It's cool that the vascularity thread has inspired people to experiment with Poser's material layers. Loving it!  That looks great!

I have to say that I have difficulties to use efficiently PrincipledBSDF's specularity for the skin, I largely prefer a second skin with an AnisotropicBSDF, to the point that my toolbox has a dedicated function:

I'm thinking Principled BSDF probably utilizes Roughness instead of Specular.   Roughness is sort of a combination of specular and gloss. In Specular, white areas are shiny. In Roughness, black areas are shiniest. 

Perhaps this link in Blender exchange might help?

https://blender.stackexchange.com/questions/13600/how-to-add-a-specularity-map-in-cycles