NASA's Ion Thruster, used to power spacecraft, generates 0.5 Newtons. When you consider the tiny scale of the nit and the amount of force needed to detach it; that's actually a fair amount of force.

The empty nit casings will remain on the hair shaft as it grows, and combing them out is simply removing material that is no longer infective.

Treating nits I read in the New Zealand Herald that parents are using animal flea treatments on their children, not to kill fleas, but to kill nits. As a ...