2nd on black salve. Seriously looked for "black salve" for years, but couldn't find a pharmacist who had a clue. Finally ran into a old guy who knew what I was talking about. He called "back home" to Kentucky who eventually got it back to me. Tchthammol 20% is what I ended up with and comes in a old fashioned squeeze tube. Goldline Labs, Miami, FL. Says to keep away from metal solids. Contains petroleum and lanolin, mineral oil and other stuff I can't read. EXTERNAL and keep away from eyes.
It may be the 20% but it doesn't work with the efficiency I remember, but worth a try.