I’m a electrologist.
You do need to go to someone who does a lot of electrolysis hours a week. It’s something that is highly skilled.
The needle/ probe is actually finer than the hair. It slides in the hair follicle so doesn’t break the skin at all. The tip of the probe will emit a short burst of heat. This damages the blood supply to the hair. No blood supply and the hair follicle will die.
You can’t have enough heat on a single treatment as it would damage the skin and scar. Also you have to work with the growth cycle of the hair as well. It goes through three stages.
It is a permanent solution. It does work if your electrologist is skilled. But, it is an investment. It takes time. The hair will weaken gradually and then become soft and downy. The hair growth cycle will get longer and longer. Eventually the hair won’t return.
There are three types of electrolysis.
Short wave diathermy
Galvanic ( old fashioned not really around now)
Blend, which is a mix of diathermy and galvanic. For this and galvanic you need to hold the bar. This creates an electrical circuit.
Sterex needles will give heat on the very tip.
Ballet needles have heat all around the needle. These are lovely to use as you can bend the needle for tricky hair follicles.
Obviously all needles are disposable and need to go into a sharps box.
Happy to answer any questions.