Abstract: Natural compositions of three essential oils effective as both a head lice repellent and treatment of pediculosis capitis. The compositions comprise essential anise oil present in an amount of about 3.5% to 50% by volume, essential tea tree oil present in an amount of about 2.5% to 40% by volume, and essential lemon oil present in an amount of about 2% to 20% by volume, the active agent can be combined with a pharmaceutically and/or cosmetically acceptable carrier for topical administration, such as aqueous or alcohol solutions, a gel, or a cream and administered with or without additives such as preservatives, antioxidants, fragrances, agents increasing solubility or delaying release of active agents. The active agent in concentrated form can be added to shampoos, hair sprays, rinses, styling gels or other personal preference haircare products. The active agent can also be used to treat material such as bedding, hair bows, headbands, caps, hats, helmet liners, brushes, and combs.