Although there is little evidence of efficacy, as a folk medicine it is typically used as a topical medication in low concentrations for the attempted treatments of skin conditions. Tea tree oil is claimed as useful for treating dandruff, acne, lice, herpes, insect bites, scabies, and skin fungal or bacterial infections. However, there is no good evidence to support any of these claims. Tea tree oil is neither a patented product nor an approved drug. It is poisonous if consumed by mouth, and unsafe to use on children.