I have read Edgar Cayce for many years. He emphasized flannel, but I have no idea why. I have found both cotton and wool flannel at local health food stores that sell castor oil. I copied a segment of one of Edgar Cayce 's reading about flanne:
(Q) Would osteopathic treatments help her?
(A) The massage with the Mutton Tallow compound, that should be given by the mother or one close to the body, will be as helpful as the osteopath at the present time. Later this may be a help. This combination is massaged into the body, you see, and also the << flannel>> is saturated with same - but be sure it is << flannel>> .
You can see by the last sentence that he said to be sure it is flannel.