Another one for Mag Sulph Paste. It was used in hospital when I was a student nurse in the 60s. I always have a jar in the medicine cabinet and recently gave it to a neighbour to remove a thorn. He was most impressed and his daughter, an A&E nurse had never heard of bit! My mother always used a kaolin poultice or, in emergency, a bread poultice! She poured boiling water over white bread, applied it to a lint bandage with gauze over it, when cool enough to bear applied to the offending splinter,thorn or whatever. I suppose it was the starch in the bread which worked.