Never mind Band-Aids, Neanderthals had antiseptic birch tar

March 19, 2026
Never mind Band-Aids, Neanderthals had antiseptic birch tar

Here's something that might blow your mind — Neanderthals weren’t just primitive toolmakers; they may have used birch tar as an antiseptic, too. And get this — modern Indigenous cultures, like the Mi'kmaq of eastern Canada, still use birch bark tar to treat wounds and insect bites. According to Kiona N. Smith writing in Technology, archaeological sites show Neanderthals knew how to extract this sticky substance, not just for gluing tools but possibly for medicinal purposes. Recent experiments tested the antibacterial properties of distilled birch tar against bacteria like S. aureus and E. coli — and the results suggest that Neanderthals could have used it to fight infections from their frequent injuries. Now, here’s where it gets fascinating — birch tar isn’t just one thing; it varies in consistency and name across cultures. The Mi'kmaq call it maskwio’mi, and they use a more fluid form for wound care. So, what does this actually mean? Neanderthals might have had their own version of antiseptic medicine, centuries ahead of modern antibiotics.

Neanderthals may have used birch tar as more than just glue; it could have helped them ward off infection and even insect bites.

People from several modern Indigenous cultures, including the Mi'kmaq of eastern Canada, use tar from birch bark to treat skin infections and keep wounds from festering. We know from several archaeological sites that Neanderthals also knew how to extract birch tar and that they used it as an adhesive to haft weapons. A recent study tested distilled birch tar against the bacteria S. aureleus and E. coli and found that Neanderthals could easily have used the same material as medicine for their frequent injuries.

from left to right: a birch tree, a roll of bark on fire, and a hand with sticky black tar on it This is the simplest step-by-step tutorial for making birch tar: find a tree, set some bark on fire, get messy hands. Credit: Tjaark Siemssen, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

Medicine can be messy

What we call "birch tar" in English has a lot of other names in multiple Indigenous languages, and it can range from an oily fluid to a brittle, almost solid tarry resin, depending on how long you heat it in the open air after extracting it from the bark. The Mi'kmaq of eastern Canada prefer the more fluid version, which they call maskwio'mi, for wound dressings and skin ointment.

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Audio Transcript

Neanderthals may have used birch tar as more than just glue; it could have helped them ward off infection and even insect bites.

People from several modern Indigenous cultures, including the Mi'kmaq of eastern Canada, use tar from birch bark to treat skin infections and keep wounds from festering. We know from several archaeological sites that Neanderthals also knew how to extract birch tar and that they used it as an adhesive to haft weapons. A recent study tested distilled birch tar against the bacteria S. aureleus and E. coli and found that Neanderthals could easily have used the same material as medicine for their frequent injuries.

from left to right: a birch tree, a roll of bark on fire, and a hand with sticky black tar on it This is the simplest step-by-step tutorial for making birch tar: find a tree, set some bark on fire, get messy hands. Credit: Tjaark Siemssen, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

Medicine can be messy

What we call "birch tar" in English has a lot of other names in multiple Indigenous languages, and it can range from an oily fluid to a brittle, almost solid tarry resin, depending on how long you heat it in the open air after extracting it from the bark. The Mi'kmaq of eastern Canada prefer the more fluid version, which they call maskwio'mi, for wound dressings and skin ointment.

Read full article

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