When I was doing a lot of welding as a Lather, I was working on Splash Mountain at Diseyworld. We had 35 guys welding in the area of a 2 car garage I got a flash burn on the back of my neck that blistered and I also got flashed from the reflection coming off the inside of my lens a bunch of us had to go see a doctor. That was the most uncomfortable flash I have ever had, Thanks Glenn I feel old now. LOL You can get flash burn on your skin and it is like a first or second degree burn I suggest cover it all especially your eyes, they say welding flash can promote skin cancer.