There are many factors you might consider.  You may want to ask your physician for a referral, or perhaps get a recommendation from a friend.  Of course there is the telephone book and the Internet to consult.  You will want to make sure your electrologist is licensed, a member of state and/or national associations and a participant in continuing education.

Most importantly it needs to be someone you feel comfortable with and confident in her skills as electrolysis requires a series of treatments over a period of time.