You are not using the version with Zygote's textures, right? If so, this comes with textures simulated by material colors. There are two eyebrow materials. The upper is the one which you can move and transmap. The other is the same as Posette. Just change the color of it to match that of the skin and it will mostly go away. Get some of the free textures - change everything to 555,555,555 and use the textures on the materials.