I am going absolutely crazy. I have used hedrin shampoo three times now. I can't see any lice but my head is still itching every night and when i nitcomb my hair it's full of these white drop thingies. Dh thinks it's the just dandruff but I'm convinced it's nits and ive probably got lice too but just cant catch them. I found 4-5 live lice in ds' hair a couple of weeks ago but after using hedrin twice he seems to be nit and lice free.