What Are Lice Eggs (Nits) and Why Are They So Hard to Remove?
What Exactly Are Nits?
Nits are lice eggs laid by adult female lice
They are tiny, oval, and usually yellow, tan, or white
They are firmly attached to individual hair strands, close to the scalp
Unlike dandruff, nits do not brush or flick off easily.
Why Nits Are Hard to Get Rid Of
Lice attach nits using a strong glue-like substance that:
Bonds tightly to the hair shaft
Resists water, shampoo, and most treatments
Requires careful, manual removal
This is why even after killing live lice, nits must still be removed to fully eliminate an infestation.
Why Missing Nits Causes Reinfestation
If even a few viable nits are left behind:
They can hatch in 7–10 days
A new infestation can begin
Families may feel like “treatment didn’t work”
Thorough nit removal is one of the most important steps in successful lice treatment.
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