Hi Rebecca,
Unfortunately there is no easy way to get it done. As Ms. Grace said, it is painful and expensive, no matter how you slice it. Efficient? If that means as as fast as possible, you can go to a place like Electrology 3000 that will do it in a few sessions, but be prepared for an extended convalescence as your face recovers. I don't really consider that an option. I am trying to transition in stealth for as long as possible, so having a face swollen up like a basketball is unacceptable, not to mention the financial hit.
I do about two hours a month, which costs me about $250, with an electrologist who is experienced with transgender care. I had a light beard, and after taking care of the dark hairs with laser, my beard is about 80% gone after less than 30 hours of electrolysis over the last 15-16 months or so. I guess I am lucky. My electrologist uses the blend method (galvanic + thermolysis), which is faster than galvanic, and less painful than straight thermolysis (for me, anyway).
Good luck!
With kindness,
Terri