know the exact physical characteristics of head lice. Adult head lice are roughly the size of a sesame seed. They have a flat, grayish or tan body that is specifically adapted to cling tightly to hair shafts. They are slow, methodical crawlers, not fast runners.
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Furthermore, their eggs, known as nits, have a very distinct appearance and behavior. Nits are firmly cemented to the base of the hair strand, close to the scalp. Unlike dandruff, lint, or loose debris, a nit will not easily flick,
