I came across an anecdotal post (medical help) mentioning a gel available that helps protect the skin during radiotherapy treatment to the head and neck. It is from the Bristol Cancer Centre and is called Radiance Skin Gel. It said that it was also used inside the mouth, and her mother didn’t get a single blister over the 6 weeks. The gel also helped when she could no longer open her mouth to even clean her teeth and couldn’t tolerate water, providing just a little relief around her gums and tongue which were so dry.
Any one tried this or found something else helpful?