My radiation was set to be the 1 week treatment 2x per day for a week. One meligant and 1 being lump was removed.
It was interrupted by a winter storm and fluid buildup that required aspiration (2 liter) that required remapping of the program. So total number of days was lengthened to about 10 days or so due to all the interruptions. I think that was a blessing. No skin burns and no skin treatment was required.
I didn't feel anything during the radiation sessions. No side effects were experienced. It's been 13 years and mammograms are good.