My experience working out while wearing a lace piece w/ perimeter bond: As Paul pointed out, the hair above the bond will be dry ... as for the rest ... even w/ the porous lace, that hair still does not absorb sweat though the lace at the same rate or degree as my growing side/back hair. It's still an unnatural looking difference in "sweatiness" factor (to my eye) ... it may just be my circumstances - blonde fine hair, worn a bit longer - but I still wear a hat or bandana when working out ... I've also soaked the system hair w/ water during the workout to disguise this.

Maybe someone w/ dark hair, thicker texture, cut short at sides/back would have less of a problem here ... others' experience or tips welcome.

FB