I don’t know what Google says about it, but the only thing that ever works for me is to blow the clot out. According to the school nurse ten years ago (ie, the only person in any sort of medical profession with whom I’ve ever talked about this), this doesn’t work and makes them worse.

Which, uh, would make sense if, yanno, she didn’t make me sit in her office for two hours doing everything you’re “supposed” to do for a bloody nose before calling my mum and getting told “Jesus Christ, Betty, just let her blow her fucking nose.” and that stopped it cold in its tracks.