Can lice eggs hatch after being treated?

Dr Sarah Jarvis MBE Treatment is needed only if you see one or more live lice. Empty eggshells (nits) do not always mean that you are infested with lice. For more information on treating and preventing head lice, go to https://patient.info/health/head-lice-and-nits/treating-and-preventing-head-lice-and-nits