Hi Beppe,
Thanks for the input!
I've set up and HDRI and tried enabling the Fake shadow parameter in the spec material but it makes very little difference.
I also think that the white behind the tear line is not the problem.
As you can see in the comparison image the side where I hide the face has ...

so, small update
I managed to get rid of the black chrome like edges, it was caused by the ray epsilon value.
However the spec material still darkens the geo behind it weirdly so I'm still stuck...
I tried changing the shape of the geo but it doesnt do much, it always looks about the same kind of ...

Did another small test to see what could be causing the issue.
This time I used the plane geo and checked it with just the eyeball, then just the face and then all of them combined.
I'm starting to have the feelin that the issue is caused from the tearline being too round and reflecting a little ...

Just did a small test rendering the different meshes I created for the tear line with just the eye and nothing else.
I think the plane works best for what I'm trying to achieve but as soon as I introduce the head again I get the same weird results.

Hi Beppe!
Thanks for checking in.
I tried using both PMC and path tracing but it makes very little difference.
There's images attached that show the difference + an image of how my specular shader is set up at the moment, maybe I'm doing it completely wrong for all I know.

I had checked out those ...

Hi I'm currently working on the eyes of a character but I got stuck trying to make the little wetness layer that goes between the eye and eyelid to make it blend a bit better.
Whatever I try to do the little tear line always turns out too dark giving me a weird result that I can't use.
Even when I ...

Any update on this? I'd like like to get the max plugin

Happy Holidays everyone!