@mimz59 Hope your dad gets relief from his burns and that he is on his way back to health.

Saw this on breastcancer.org for radiation burns--If your skin forms a blister or peels in a wet way, leave the top of the blister alone! The bubble keeps the area clean while the new skin grows back underneath. If the blister opens, the exposed raw area can be painful and weepy. Keep the area relatively dry and wash it with warm water only. Blot the area dry and then apply a NON–ADHERENT dressing, such as Xeroform dressings (laden with soothing petroleum jelly) or "second skin" dressings made by several companies. To relieve discomfort from blistering or peeling, take an over-the-counter pain reliever, or ask your doctor for a prescription if you need it.

Also, ask your doctor for a stronger steroid cream available by prescription. Examples include 2.5% hydrocortisone cream and bethamethasone.