Yours is one of those questions for which there is no easy answer. On the one hand, the quickest removal an electrologist can provide is 9 months to completion. It takes that long for every hair to show itself once in any given area. On the other hand, if you have a problem that is creating new hairs, you can grow new hairs at what ever rate your body is drafting new follicles to grow hair.
This is why we ask that women consult with their doctors to find out if they have a hormonal problem or other biological problem, or drug interaction (not that doctors are always helpful in this endeavor) because if the hair growing condition is not arrested, one could need the services of an electrologist (although on a limited basis) for the rest of one’s life.
You have about 1,000 follicles per square inch, and if your body is making new hair bearing follicles out of empty one’s that previously only handled production of sebum and sweat, then your problem is how many hairs per month your body is calling into service and how long it may take to get to 1,000 at that rate of recruitment, and finally how quickly your electrologist can remove the hairs to keep you clear.
So when you hear about someone who says “My friend’s Aunt Sophie tried electrolysis and she went every week her whole life.”, you are either hearing about someone who was addicted and working on her whole body, or you are hearing about someone who has an unchecked hair drafting problem.
Some people who either won’t, or can’t arrest their hair growing problem will need treatment for a short time every 3 to 6 months for the rest of their lives, but most people are done with an area in 9 to 18 months if they get quickly to first clearance.