Hi. Here's another study that i made some time ago, but didn't posted. Just because it's not fishished. Of course, Skin is something that is not made of a single "pattern" so it does not make sense to just look at it as a tile. But this could be used as a base shader to paint skin layers in Substance Painter.
Most of the frames here, are from OpenGL viewport of Substance Designer, so they don't have SSS effects, i tried some tests on RedShift using one rough export of the maps and the SSS worked ok. Overall it's a case-study. Using Zbrush seems like more effective way to do Skin maps because of its complexity and diverse nature depending on the part of the body. But i like to make the Albedo on Substance. Its very promissing. :) Hard to see but i added micro-blue veins in the skin, fat tint, etc...