Yikes, super glue in the hair. If has been 7-10 days the wound should be closed, so there are a few of things you can try.
One is to use acetone to dissolve the glue, but not my first choice. Another is to work at it with a petroleum based ointment, neosporin, bacitracin, or even vaseline. Another is to take a really long shower and allow the water to run over your hair while working at the glue.
You must be sure the wound will not reopen before trying any of this. Afterall, dermabond is nothing more then sterile, purple super glue.
Whatever you decide to do, make sure to take your time. I really don't like dermabond. I have seen a lot of wounds reopen, seen eyes glued shut, and seen glue in the hair. None of those are any fun. If there is a next time, ask them to tie pieces of hair on either side of the wound together to pull the wound shut. Probably won't happen though, to time consuming. The next best bet is staples, quick, they work, but you need a staple remover to get them out. Or go back to a Dr. to have it done. Then of course there is always sutures, which you can remove yourself, or have a friend do it, but should be removed by a trained medical professional.
I hope you can get it out without losing to much more hair.