I dont write this as giving advice to everyone but just to share my experiences.
I recently had 15 treatments of radiotherapy for breast cancer and had no soreness or even redness of the skin. The reason for this-I think-is that I used 100% pure hypo-allergenic aloe vera gel. xxx You must make sure you get the completely 100% natural gel-no perfume or additives of course. I applied this before the treatment even began, after each treatment and up to 3/4 times a day-but not immediately before each treatment. Its a bit messy and sticky but a small price to pay for no soreness or iritation. Just a thought and if it helps someone so much the better. Doctors dont actually recommend this as I feel they are afraid some people might buy the perfumed or not completely natural version. Hope this helps.
Bless everyone
xxxxx