Help your child's class stay lice-free this spring! This item includes 30 sets of Circle of Friends Lice-Free Zone Shampoo and Conditioner. You can give 1 set to each child in the class, plus their teachers, and...Mr. Frost?! Lice-Free Zone Shampoo and Conditioner contains a special blend of tea tree, andiroba and lavender oils that helps repel lice and other insects.