Today, insecticides used for the treatment of head lice include organochlorines (lindane), organophosphates (malathion), carbamates (carbaryl), pyrethrins (pyrethrum), pyrethroids (permethrin, phenothrin, bioallethrin), and spinosad (spinosyn A and spinosyn D) [REF].
Tea tree oil has been promoted as a treatment for head lice; however, evidence of its effectiveness is weak [REF].