May I have a little rant here? Ok I will anyway.
I think the current advice on getting rid of nits/preventing them is hugely eurocentric. Allow me to explain:
My kids are mixed race. They have very curly, coarse, thick hair.
It is next to impossible to get a nit comb through their hair. If you DO manage to get it through it is a)extreamly painful and b)does terrible damage to the hair.
No amount of conditioner helps.
My darling girl had the biggest hair you ever did see. She got nits every bloody week when she was in primary school. It was horrible and it took me hours every day to get the nits and bugs out of her hair. I used to plait it and oil it and keep it up. Lots of little girls would have their hair down and all over the place and she would just get them again and again. I had to use chemicals in her hair so much I cant help but worry they may have contributed to her illness (no proof and not sure about it but it does cross my mind every so often).
My boys have dreadlocks. People are often v.snotty about them and think they are dirty. They are not and ironically I have yet to have a case of nits since their hair has been locksed up.
I may be wrong but I have yet to see any campaign featuring a child with afro or mixed hair.
I am happy to be put straight if anyone has seen one or has any tips (in case boys get them).