Electrolysis or any other permanent removal method takes 9-12 months. This is due to hair cycles, i.e. it’s not the same hair that gets treated over this period. It’s because every area has more hair that you can see at any one point. Hair cycles.
There are various types of electrolysis and skill really matters as well as machine used and settings. It doesn’t have to be very painful. It can be very very tolerable. But it needs to be a good electrologist with a good machine, using the right method.
That little hair is easy to treat, but treatments are still needed over the course of 9-12 months as explained above.