I'm trying to use this male bald stubble http://modthesims.info/d/149118/bal...-for-males.html with this beard, but in Body Shop clicking the bald head makes the beard disappear. If I pick the head first, the beard appears to be selected but it just never appears. Weirdly the white beard does. In CAS I could get it to work if I put the beard first, then the head. But I want to be able to make this in BS and I want it to work properly if possible. Is there a flag or something that the head might be missing that I could fix?

Does it do this with all facial hair? The bald stubble you linked to is very old, although I don't know whether that has anything to do with your problem. Do you have the same problem with other bald hair DRs? I use one by Mooglesims and could not reproduce the problem.

Here is the page for the bald head hair DRs at sims2defaults. All of these are much more recent (2013 and later).
https://sims2defaults.dreamwidth.org/274075.html

No, not with all facial hair, but thank you. Discretion is the better part of valor in this. Iow, yeah, gonna switch to some different bald heads now. Good advice as always.