Salt can also be used to eradicate head lice through drying out the lice.
Mix one-quarter cup of salt and one-quarter cup of vinegar completely.
Gently spray the solution onto your hair so that it becomes slightly wet. Put on a shower cap and leave it for about two hours.Then wash and condition your hair.
Repeat this every three days to get positive results.
You CAN actually get rid of lice by constantly combing them out of the hair BUT it takes forever and some lice can sneak by and reinfect your entire head. Not worth it.