I just used conditioner after the using hedrin as instructed then followed the advice here.
When my dc get lice and when I got them I had fairly long hair, I could easily spend an hour combing out my hair, rinsing the comb between each stroke, checking for lice. Dd has very long hair and it is a nightmare. Even thinking about the lice makes my head itch. I think you have to be very patient and spend a lot of time combing. I would rinse the comb in a clear jug and count the nits and live lice afterwards, they can live for days off the head btw - I had one on a piece of cotton wool in the jug, just to see how long it would go on for.
Dd has her hair tied back every day, but this thread has made me want to do a nit check. I use a faith in nature shampoo neem and propolis, the neem is supposed to deter the lice. I would also rinse my hair in cider vinegar, 1/3 vinegar to water, leave it on my hair for 5 mins then rinse, then condition comb. I do the vinegar rinse because I think the acid in it would kill or harm the lice - just an idea, no scientific knowledge if it works, but it helps get the grease off your hair too, from the hedrin etc.
My ds had a girl in his class who had them all the time, she moved away and my ds stopped getting lice, pretty
for the girl, because she was lovely.