Add 10 drops of thyme essential oil to one teaspoon of shampoo. Mix well and apply the mixture to the scalp and hair. Leave the shampoo in the hair for five minutes before rinsing thoroughly with a 50-50 mix of apple cider vinegar and water. (Note: Because thyme essential oil is so powerful, is must be used with caution, and should never be applied undiluted to the skin or scalp.)
