I personally dont know how tar was used for health, but it was big export item of Finland during medieval times.
[1]https://www.helsinkitimes.fi/themes/themes/health-a-wellbein...
Another weird/fun one is using bleach as an anti-inflammatory (topical only, of course...), although these days you can find derivative products that offer the same benefits but are much less harsh.
Not to be done too often but every once in a while I find it helpful. Not all that different from a strongly chlorinated pool.
Another cool one, especially if you don’t have a sauna, is doing a mustard bath. You will sweat like a stuck pig
So many questions...
American, English, or Dijon?
*Sponsored by Heinz? ;)
Pour that in a warm bath and soak for 20 mins. Then get out and wrap yourself in a towel and continue sweating for 15 mins or so.
Sounds like you're making human soup? :)
Now, there are things like Fucidin, Polysporin and silver ointment for infected wounds and burns, respectively, that are safer and more effective.
Some people still swear by it, because “tradition” and probably some element of malignant patriotism too.
It's used small amounts in additive in soap or shampoo mostly as a scent, mouth pastille and lozenge a for taste, animal health care kind antibacterial and bug resistant etc. long time ago.
Quite lot of applications especially old times long time ago before more scientifically developed medicines were commonly available. These days less there but it's used as a scent or for flavour.
I'm also still unclear on how it was used to treat human illness (treating boats and roofs is clear enough)
https://en.wikipedia.org/wiki/Terva_Leijona
I'm guessing these might no longer contain actual tar.
Smells good, for sure. But I don't know if it promotes good health.