I shed hair like crazy for about four months, but not so much that it was noticeable to anyone but me. I had a lot of hair to start with, and it's actually a little more manageable now that there's less of it -- I don't break ponytail holders any more, and it's easier to put it up. It's been growing back for a while now, but my hair's very long, so it'll take a while for the new hairs to catch up. The "wispies" drive me crazy too, though!