Nix permethrin is a synthetic pyrethroid similar to naturally occurring pyrethrins permethrin lotion 1 is approved by the fda for the treatment of head lice permethrin is safe and effective when used as directed permethrin kills live lice but not unhatched eggs permethrin may continue to kill newly hatched lice for several days after treatment. This may be one of the prescription treatments sometimes simply combing your childs hair to remove the lice and nits eggs can be effective while time consuming studies show that combing injures the lice so they rarely survive when it comes to removing lice by combing technique is crucial. Rinse your hair thoroughly with the apple cider vinegar saturate the scalp and the hair with the coconut oil cover your head with a shower cap and leave on for 6 8 hours or overnight comb the hair to remove the dead lice and nits and shampoo normally. Dehydration another option is a machine that uses one application of hot air in an attempt to kill head lice and their eggs through dehydration the machine requires special training and is currently available only at professional lice treatment centers