Hi!

diolma is on the right track, but I think you made an error in

"put exactly the same shader on the face as the lip minas the pink color " (sic)

You have to mask the pink color in there too! The face shader and the lip shader have to be identical!

The pink part must be driven by your lip mask.

Start with the lip shader. Insert a Blender node between the Diffuse_Color and your color map.

So Diffuse_Color <- Blender <- YourColorMap

Connect your color map to both of the color input channels, Value_1 and Value_2, of the Blender.

Set the pink color on the Value_2 parameter of the Blender.

Connect the Blender parameter "Blending" to your lip mask.

Now copy that whole shader to the face.

I didn't study the rest of the shader, but if there are other effects that should be one way for face and another way for lips (as identified by the lip mask) then you need to blend those effects too.

In other words, pretend you do not have a unique material zone for the lips. Do your work as if the whole face was just one zone. Design your shader to isolate the lip effects, relying only on the lip mask to do it. Do not rely on the unique lip zone as a factor in your design.

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)