4
The NHS recommends not to use any of the following treatment options:
products containing permethrin
head lice "repellents"
electric head lice combs
tree and plant oil treatments, such as tea tree oil, eucalyptus oil, and lavender oil
herbal remedies
The very basic option:
Wet combing involves removing head lice with a special fine-toothed
comb. ...
2
They're saying that a head lice infestation might provoke the immune system into more effectively resisting body lice infestations.
1
You could use a lice comb and look for nits as well. My family and I had them once after traveling and we used olive oil and a lice comb and it worked well.
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