So Cozy Boo Hair Conditioner. BOO is infused with pure tea tree oil which has been show to repel lice and ticks from hair and scalp. Anyone can get lice- so it is important to protect your children. BOO is gentle enough for daily use, contains ingredients that add body, shine and strength to the hair while protecting against lice. BOO is a MUST HAVE product for the little ones, especially before they head to school and camp. 8 Ounce.