For the redness of the face my husband experienced we used a gentle a Aveeno Baby Wash, he also used it for his hair, for the soreness in the mouth the Oncologist gave him a mouthwash containing Novicane which I guess numbed his mouth so he was more comfortable, for the sores on the bottom of his feet he wore a thick white sock all cotton, hard to find all cotton but found them in a store that sells Orthopedic shoes and cushioned his sneakers with inner pads. The sneakers were a thick wedge and the insides were very cushioned. Hope this helps. I remember the oncologist saying these signs were good, it meant the drug was working.
Bernadette