[lrasinen]

Tar. Specifically wood tar,

[jimmySixDOF]

Pine tar is used in topical medicine for dermatology around the world I don't think it's limited to anywhere particular.

[t-3]

In Finland, they are most likely using birch tar.

[lrasinen]

Nah, it's pine.

[amelius]

Isn't that the same stuff as in soldering flux?

Smells good, for sure. But I don't know if it promotes good health.

[louthy]

And coal tar