Hello,
All my characters have dark shadow around their eyes due to eyelashes’s mesh casting shadow. I edit the eyelash material and played with blend modes, nothing worked. I tried to edit the mesh but no option for any of the meshes to disable/enable the (cast ray tracing shadow)

Please help.

Everyone runs into that.   Here is the link to the conversation when I was battering this issue.  If you go towards the end of the string you’ll find the solution;)
https://forum.reallusion.com/445018/Eyelash-Shadow-In-Unreal?PageIndex=3