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  • It can start as an itch.

  • Maybe a tickle on your scalp.

  • It's head lice.

  • Tiny and tenacious.

  • Thanks to millions of years of evolution, these suckers are not easy to get rid of.

  • You might end up in a salon, but not the kind for haircuts.

  • Young lice are so small they're almost impossible to see with the naked eye.

  • Our scalp is their buffet.

  • They feed on our blood.

  • You can see it inside this adult louse.

  • It's the brownish stuff that's moving.

  • The secret to their success?

  • Their claws, called tarsal claws, and this little part, called a spine.

  • A pair on each of its six legs.

  • They've evolved to fit perfectly around a human hair.

  • They make lice into speedy little acrobats, using our hair like a tightrope.

  • They can't jump or fly, but they get around.

  • Say two kids, one blonde, one brunette, touch heads.

  • The louse just scoots right over.

  • It's been one long game of hopscotch, from human head to human head.

  • And it has to be us.

  • Our head lice can't live on other animals.

  • In fact, other primates have their own species of lice, adapted to their unique hair.

  • And birds have lice that hide in their feathers.

  • Ooh.

  • Cozy.

  • And we all want them gone.

  • Common insecticides won't kill our head lice anymore.

  • They've become resistant to them.

  • Even their eggs have serious staying power, glued to individual strands of hair.

  • But lice do have a weakness.

  • They can't survive away from our moist, warm scalp.

  • Head lice cannot even live on other hairy parts of our body.

  • So if you, or a professional, painstakingly comb them out, they'll starve, and die within hours.

  • Okay, it's not fun.

  • But it's just a temporary encounter with a tiny hitchhiker that is biologically destined just for you.

  • Anyone else feeling itchy?

  • Here at Deep Look we think all critters, even the less lovable ones, like mosquitoes and ticks, deserve their moment in the spotlight.

  • You agree, right?

  • So support us on Patreon.

  • Click that link in the description.

  • Thanks!

It can start as an itch.

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C1 US scalp hair human tiny tightrope lovable

How Lice Turn Your Hair Into Their Jungle Gym | Deep Look

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    Mackenzie posted on 2020/07/02
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