Hello, i was notice on my model after detailing it that, i have bad topology on the lips area, there is some way how to zremesh the direct area (lips) ?? if i again zremesh full character, i loosing details on the character, can u advice me what i do ? 
Zremesh
ZaraNewman
#1
RDeWeese
#2
Paint a mask over the lips and then hit Ctrl + W to create a Polygroup. Then, Ctrl + Shift click on the lips Polygroup to isolate it so that only the lips are visible.
In the ZRemesher parameters, click the āFreezeGroupsā button. Now you can run ZRemesher only on the lips and it wonāt affect the rest of your model.
Next time you should post your ZBrush questions in the ZBrush section of the forum here: http://forums.cgsociety.org/forumdisplay.php?f=140