Carron oil—so called from the famous Carron ironworks, where it is extensively used—not only lessens the immediate pain, but covers the part with a film which effectually shuts out the air and prevents the skin getting dry.

This Carron oil […] consists of equal parts of olive oil and lime-water. Olive oil, or salad or Lucca oil, is the oil best suited for the purpose; but if not easily obtainable, linseed oil answers the purpose very well.