Eggs and yoghurt offer a natural and effective ... How many times may I use a hair mask in a week? Every head of hair is unique, and how frequently you should use a hair mask is highly dependent ...

But while they’re nimble on our hair, once they’re off, they don’t last long –they’re clumsy, uncoordinated and die quickly. The term “nits” actually describes the eggs of head lice.

Commonly used chemical products aren't working as well as they once did, meaning head lice are harder to kill.