Well, they may be linked to full body morphs, but I change the pbm morphs all the time and don't have a problem. They let me tweak that one body part easily without affecting the rest of the body, isn't that the point? There's a brows in (I think that's what its called...poser ain't open right now!) that puts the upper brow inside his head so you don't have to worry about it. You can finally see the textured brow while posing without those ugly dots floating over his head!