3/4 cup apple cider vinegar with the "mother" 1 tsp. tea tree oil 1 tsp. eucalyptus oil 1/2 tsp. lavender oil 3 1/2 cups distilled water Mix and it's ready to use. Use about 1/3 of the solution on each head of hair for the initial dose. Let dry and don't rinse out. Apply coconut oil to the hair then spray the hair wet with a spray bottle a few times a day to moisten the scalp. Spray bedding and furniture to deter lice. This is for external use only. Kelly did this rinse twice, a few days apart, and for a total of about a week of spraying and monitoring.