yarn tail upkeep question

So. I friggen love yarn tails. They're so beautiful and fun to make, but my biggest beef is their tendency to get messy. I straighten and brush my yarn (almost obsessively) but just wondering if there are any helpful tips out there in keeping them nice as possible when you can't sit there and brush them every five minutes. I was thinking hairspray perhaps? Maybe lightly mist and brush the tail out? Thoughts? Like, if I were to go to a con or a meet, would it be good to do something like that before going out?

Any help in this area would be great!