Nix Dermal Cream (Permethrin) 5% is formulated to treat scabies infections by killing the mites that cause scabies as well as lice and other pests. There is enough Nix Dermal Cream or generic Permethrin in 1 30g tube to cover 1 adult but a 2nd treatment may be required. All family members that are in close contact should be treated to reduce the risk of a reinfestation. If you are pregnant, talk to your doctor or pharmacist to be certain it is okay to apply Nix Dermal Cream. The generic alternative is not manufactured by the company that makes the brand product.