Now really I am fed up from this disease. I had tried almost all treatment but it is taking too much time to cure. In starting my doctor prescribed me lotion and shampoos that are containing 1% permethrin. Now he prescribed me malathion 0.5% in isopropanol. I am using this from last one week but it is taking too much time cure. So I want to ask from you people, is there any other best treatment available for the hair lice? And how much time that will take?