Educational information, not medical advice — ask your doctor or midwife.
Scots pine (Pinus sylvestris) is the tall evergreen tree of northern forests. Nordic homes used three parts of it: tar burned from the wood, sticky resin, and the soft inner bark. Finnish calls the tar terva, the inner bark pettu; Sami calls the bark beazenávdi.
Pine tar is a thick, dark, smoky liquid made by heating pine wood with little air. It was painted on boats, roofs and rope, and rubbed on skin and on livestock. Resin was melted into salves, and inner bark was dried and ground into flour in hungry years.
Here is the honest verdict. Pine tar still appears in licensed soaps and shampoos for itchy, scaly skin, but modern trials of it are few and old. Long traditional use is not proof that a remedy works, and it is not proof that it is safe.
The skin effects have some support. Most of the rest is laboratory work.
Tar appears to calm itch and slow the fast skin cell growth seen in psoriasis (a scaly skin rash). This is best shown for coal tar, and pine tar is assumed to act in a similar way. Direct trials of pine tar itself are thin.
In test tubes, pine resin acids slow some bacteria and fungi. Whether that happens inside a real wound is not settled. The small Nordic trials of resin salve used Norway spruce resin, not Scots pine.
Turpentine terpenes warm and redden skin when rubbed on. That counter-irritant feeling may distract from an aching muscle. It does not treat the cause of the pain.
Inner bark helped in famine through bulk and fibre. There is no drug-like action behind it.
Nearly every form is for the skin, not for swallowing.
Pine tar is sold in soap, shampoo and ointment, usually at low strength. Several countries license such products for itch, eczema and dandruff.
Resin is sold as a salve, blended with fat or beeswax. Most Nordic resin salve research used Norway spruce resin, not Scots pine.
Turpentine and pine needle oil are sold as rubs and as steam additives. They are strong oils. They are not drinks.
Pine tar also flavours Finnish sweets, pastilles and spirits (tervaviina). These are food and drink, not medicine.
Inner bark flour (pettu) is now a niche baking ingredient. It is used for flavour and fibre in bread.
Tar was one of the great exports of Sweden and Finland for centuries. Barrels of terva sealed the ships of half of Europe.
Farm households kept tar for more than wood. It was painted on cuts, boils and itchy patches, and on the hooves and skin of animals. Tar water and tar in spirits were taken for coughs, and a Finnish saying held that if sauna, spirits and tar did not help, the illness was fatal.
Resin was warmed with butter or tallow into a salve for splinters, boils and slow wounds. Inner bark was stripped in spring, dried, and ground into pettu flour to stretch the rye in famine years. Sami and Finnish communities both recorded this practice.
These records tell you what people did. They do not tell you that it worked.
Stop and see a doctor if treated skin blisters, swells, weeps or spreads, or if a rash gets worse rather than better. Also see a doctor if an itchy scalp or scaly rash has not improved after a few weeks.
Get emergency help at once if anyone swallows turpentine, pine oil or raw tar. Warning signs are coughing or choking, breathing trouble, vomiting, belly pain, drowsiness or a fit. Call your poison centre or emergency number, and do not try to make the person vomit.
In the EU, the UK, the US and Australia, pine tar is allowed in soaps, shampoos and some over-the-counter skin products, with limits on purity. Turpentine and pine needle oils are sold as rubs and solvents, never as medicines to drink.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
One email with the summary. We'll also send a short weekly evidence update — unsubscribe any time.
