Random link: https://www.cancer.gov/.../causes-prevention/risk/substances/coal-tar
The extra processing is to remove creosote from the pine tar.
dead link but appears to be referencing "coal tar" not "pine tar"
Well, sorry about the link. Do a search on "creosote carcinogenic".
The point being, creosote is the reason for the pine tar warnings. So long as it's removed it should be safe.
“Sola dosis facit venenum”-“the dose makes the poison”.
&
Hormesis - a little poison is good for you.
(post is archived)