Red Superfly
You creepy little stalker
Oh come on, lightning (Star Wars force lightning I mean) obviously doesn't do anything to skin. It just cooks you maybe like a microwave, from the inside out.
If it was truly realistic lightning, then anyone that gets hit with it would bleed and burn and show wounding wherever the lightning hits them. Look at shock victims, the only wounds come from the point of contact, so in these cases, the victims should looks badly scarred all over. But this is like microwaves or something.
It didn't burn Vader or Luke, or Yoda, or Mace, or Padawan Anakin.
It only had an effect on Palpatine, so it's obvious he changed due to him using it, or because he used too much of it, or he dropped his guard, or whatever.
And so far every Jedi that has been shocked has been coverred in the stuff. Yoda was shot in the face, it went through Vaders mask, it hit Mace's face. It was coursing all over Luke for ages. They didn't deform.