How thick or long those hair have to be for electrolysis?

I don't think it really matters because when I see them shows where people are getting electrolysis done, the people who work on the people who need it usually shave of the hair and then start the electrolysis procedure. x

How thick or long those hair have to be for electrolysis?

I do not think it matters if ,hair is long or thick for electrolysis to work.