Glamerous hair (as well as many others) appears as a white mesh because of the settings in the hair itself.

select the hair, goto Display>Element Style>Use figure style.
or select the hair and hit ctrl+shift+0 (that's a zero not the letter O)

this is a byproduct of the older poser version's preview which did not show transparancy well, so the creators set the individual elements display style so that it would be easier to see.

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