The shampoo, cream rinse, or spray kills the live lice on the head but may not kill the nits. While the nits don't need to be removed from the hair, some people use a comb to remove nits after using lice treatment because they don't like the look of nits in the hair.

Can shampoo get rid of lice?

Your first line of defense against head lice is an over-the-counter (OTC) head lice treatment that typically comes in the form of shampoo. The main difference between various products is the active ingredient and which stages of head lice it kills.

How long does it take for shampoo to kill lice?

Comb dead and any remaining live lice out of the hair using a fine–toothed nit comb. If, after 8–12 hours of treatment, no dead lice are found and lice seem as active as before, the medicine may not be working. Do not retreat until speaking with your health care provider; a different pediculicide may be necessary.