Do nits only go to clean hair?

Nits, which are the eggs laid by head lice, do not specifically prefer clean or dirty hair; they can attach to any hair regardless of cleanliness. However, they are more easily noticed in clean hair since the absence of dirt and oils makes them more visible. Head lice are attracted to the warmth and blood supply of the scalp rather than the cleanliness of the hair. Therefore, anyone can potentially get lice, regardless of their hair hygiene.