The Little Green Lice Guard system is comprised of 3 products that are clinically tested and help prevent head lice infestation. All of the products in the Little Green Lice Guard collection are formulated with a proprietary blend of natural Tea Tree, Neem, Rosemary, Peppermint, Lavender, and Eucalyptus oils to effectively help repel head lice. They are non toxic and specially formulated for sensitive skin. These products are EFFECTIVE, yet gentle enough for daily use. For maximum results layer all the products in the Little Green Lice Guard system.