If you've ever stood at school pick-up while another parent confidently explained “the real reason” your kid got nits, you've probably absorbed a fair bit of head lice folklore without realising it. Some of it's harmless. Some of it will have you scrubbing your house for a week for absolutely no reason. Let's go through the big ones properly.

Myth: Lice prefer dirty hair

This is probably the most common one, and it's also completely backwards. Head lice don't care whether hair is clean, dirty, washed daily, or not washed in a week - they're not attracted to dirt, and they're not repelled by cleanliness either. What they actually want is simple: hair, and a scalp to feed from. That's it. A freshly washed, beautifully brushed head of hair is just as appealing to a louse as any other.

Myth: Lice can jump or fly from head to head

They can't do either. Head lice have no wings and can't jump the way fleas do they can only crawl. The only way they spread is through direct head-to-head contact, which is exactly why they move so easily between kids who play closely together, share pillows during a sleepover, or lean in for a photo. It's not a sign that anyone did anything wrong. It's just how close contact works.

Myth: Lice can live for weeks on pillows, hats, and hairbrushes

This one causes a lot of unnecessary house-scrubbing. In reality, a louse can only survive away from a human scalp for about 2-3 days before it dies. They're not equipped to live independently - no scalp means no food source. So while it's sensible to wash recently used pillowcases and give hairbrushes a proper clean, there's no need to bag up soft toys for a fortnight or spray your furniture with anything.

Myth: Only kids get head lice

Adults get head lice too parents, carers, siblings, anyone in close contact with someone who has them. It's just far more common in children because of how much close, prolonged head contact happens at school, in sport, and during play. If your child has lice, it's genuinely worth checking every person in the house, not just assuming it's a kids-only problem.

Myth: Having head lice means someone isn't clean

This one causes more unnecessary embarrassment than any other myth on this list, and it's simply not true. Head lice affects roughly one in three children at some point, and it has absolutely nothing to do with hygiene, cleanliness, or how well a family looks after itself. It spreads through contact, full stop. There's nothing to be ashamed of, and there's no reason to keep it a secret from school or family.

Myth: One treatment and you're guaranteed to be lice-free for good

We wish this one were true. A single thorough treatment will remove the lice and eggs present at the time but it can't stop your child from picking up lice again next week from a classmate, a shared hat, or a sleepover. Re-infestation isn't a sign that a treatment failed. It's just a reflection of how easily lice spread through ordinary, everyday contact.

Myth: Every light brown speck you find is an egg

Not necessarily. Once a nymph (baby louse) hatches, it leaves behind an empty light brown egg (can look white on the hair) casing stuck to the hair shaft and that empty casing can easily be mistaken for a live, viable egg. The difference matters, because it changes what you're actually dealing with. This is one of the reasons a proper, trained comb through is more reliable than a quick look in bad light at the kitchen table.

Myth: Natural remedies like tea tree oil or mayonnaise get rid of lice completely

Home remedies like these can occasionally slow live lice down or make them easier to comb out, but there's no strong evidence they reliably kill eggs and eggs are the part of the problem most likely to cause a second round of lice a week later. The same is actually true of many chemical pharmacy treatments: they're often effective against live lice but far less effective against eggs, and lice resistance to some chemical formulas is becoming more common. Thorough physical combing remains the most reliable method, because it doesn't rely on chemistry to work.

Myth: If nobody's scalp is itchy, nobody has lice

An itchy scalp is a common symptom, but it's not universal - plenty of people, especially on a first infestation, feel nothing at all. The itch is actually caused by a reaction to louse saliva, and that sensitivity builds up over repeated exposure. So the absence of itching doesn't mean the absence of lice. A comb nit service is always more reliable than waiting to feel something or even visually look for an egg.

The bottom line

Most head lice myths come from a place of good intentions - someone's trying to help, or trying to make sense of something that feels stressful in the moment. But acting on the wrong information usually means more stress, more unnecessary cleaning, and sometimes a treatment that doesn't actually solve the problem. If you're ever unsure what's fact and what's folklore, we're always happy to talk it through.

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