Quote - > Quote - > Quote - It looks a lot like the issue I was having.  If you have 2 meshes colliding with each other than you'll see black splotches.  On the eyebrows.. use a smoothing modifier.. set it real low like 1 or 2.. then set the collision instances to like 5 and set the collision object as genesis.  should clear up

It isn't genesis, it's V4 and her built in eyebrow bit. I didn't think you could use built in bits for the smoothing/collision detection stuff. There is no seam/issue showing in a 3Delight render (hence why I'm asking here). 

I'll see if I can apply the idea. 

It may well be a mesh collision issue. It's sure not what I thought you were describing. If Sharky's suggestion does not work try adjusting the bangs out from the forehead slightly... 

 

Edit: What hair is that?

Edit2:What character is that?

 

Why would adjusting the bangs help when it's her eyebrows that are the issue? Character is FK-Jannika  (V4) (with dial mods) and the hair is Alanis, with a toxic texture. But again it seems to be the Eyebrow body part object - allowing to change eyebrow colours - there is no eyebrow on the base texture - a part which is typically off in my usual V4 renders. 

Thanks for the contiuned help/suggestions/ideas.