SSS dark lines :( combine 2 materials?

Halloo. I have a hand model which has one material for the skin and another material for the nails. They are added via polygon selection tags. Unfortunately having two SSS materials means I get the dreaded dark lines at the seams.

Do you know how I can combine the two materials into one to avoid getting the lines?
There are no opacity masks to use in the layered material shader unfortunately.

Maybe this thread will help? https://forum.corona-renderer.com/ Corona SSS and Daz3D People #msg137525

Hmm - doesn’t seem to without painting out SSS areas :(. Will there ever be a fix for this? Its been a very long time since the first reports

Here is one possible solution:
Use Volumetrics in a Corona Physical Mtl instead of SSS or Skin Mtl.
Then go to development/experimental stuff ( https://support.chaos.com/hc/en-us/articles/4528469959953 ) and disable the “use material-based medium resolving” option. It should work fine as long as the different materials are assigned to a single object (it is not split into multiple separate objects).


Duplicate of https://forum.corona-renderer.com/ DAZ 3D SSS PROBLEM