heyas; the p5 hair exports lines instead of facets. if your 3d app can read, dispay, and/or render lines in an obj format, you should be fine. otherwise, you need to convert the lines to facets, which means each hair becomes a closed polygon with its end connected to its root. which can be somewhat of a mess. hmmm... i can't remember at last count if the exported hair had all its hairs, or only the guidehairs. anyway, lines are apparently legal obj 'things,' so....