Not really. You can *paint" a more correct bumpmap. But in reality it's not worth the bother. It's mainly things like body hair and eyebrows, since they're usually dark they will create dents instead of ridges on the bumpmap.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.