In Character Creator 4 (CC4), when you try to change eyebrows using a template, sometimes the new brows just get added on top of the old ones, instead of replacing them.
This happens because there are two main types of eyebrows in CC4:
You don’t mention the kind of eyebrows. Some are part of SkinGen and are part of the face texture, the other option are eyebrows that are actual mesh that sits on the face mesh.
If you provide the specific eyebrows your are talking about, we may be better able to help.
I think it’s probably part of the face texture. I can’t find a layer for just the eyebrows. Do I have to fill in the eyebrows with an external software or something?
Yes, that could be the case. If you use Headshot to create the face and the image of the face has eyebrows, then they will be on the face texture.
So one option is indeed to remove the eyebrows before you create the face.
Another option is to do something with the mask option in Headshot, like shown here:
I loaded the mask texture in my graphics editor and then added the face texture as a new layer. I then removed everything but the eyebrows, changed the layer to black-and-white and darkened the eyebrow part. I also addeed some blur to smooth the sides. I then merged the layers and saved the mask.
You then need to click Update face texture and you’ll see the result. It works reasonable well. Tweaking more would improve it.