Hey guys I had an opportunity to work as a beta tester for texturingxyz on their new awesome MicroMaps.
I've written a tutorial to showcase how I construct skin in UE4. You can download the material I made here : https://gumroad.com/l/XYtzt
Original Project : https://www.artstation.com/artwork/lVE4NG
For a better read and all working links, head over to texturingxyz website : https://texturing.xyz/pages/saurabh-jethani-creating-realistic-skin-in-ue4

If you have any question just message me on Artstation .
Cheers!