Head lice are passed by direct contact from person to person or by sharing brushes, combs and hats. It is a very common condition among schoolchildren who are likely to have at least one episode in their lifetime. Lice and their eggs can be removed from human hair using combs like this one.

Head lice are often referred to as ‘nits’ and this device is probably better known as a ‘nit comb’. Nit combs could be used at home by parents, but at school they were likely to be used during an unwanted visit to the so-called ‘nit nurse’.

This envelope contains instructions for the 'Derbac' brand lice comb.

Head lice are passed by direct contact from person to person or by sharing brushes, combs and hats. It is a very common condition among schoolchildren who are likely to have at least one episode in their lifetime.