Here is the deal: electrolysis is a procedure that requires energy. We need that energy to permanently disable hair follicles, as in forever! Where there is trauma, whether it be a thermal burn with electrolysis or laser reduction, the skin will turn red as the blood rushes to site of trauma. It is temporary and will go away especially if you cool the area with compresses or aloe vera gel.
Electrolysis means there will be sensation because every gosh derm hair follicle is surrounded by a net work of nerve bundles. So, the way to conquer that to reduce the sensation as much as possible is to first sample as many electrologists as you have access to and get short treatments to see how it feels and heals. We are all different in our approach. As a consumer in a free market system, you are free to compare and contrast businesses and then decide who you will be most comfortable with for you hair removal needs. This process can last about 2 years, so you do become friends with your electrolologist. Beyond that 2 years, you may still need her or him because the body is never quiet and stable for most people, in some areas. Your chin may be finished, but new hair may sprout somewhere along your life’s timeline, so do keep that contact information handy because there may be more to come in the future or you may stay absolutely stable.
I can’t tell a lot by your picture. One area is redder than the other, wait 48 hours and see if the redder area scabs. If it is a pinpoint scab, that is okay. If it is huge, then you can get other consults. Some of us use thermolysis to disable hair follicles and some of us use blend or straight galvanic. They all work, but the skill factor is what determines effectiveness and sensation and in my opinion, the probe choice and equipment choice is very, very close to that skill factor.