Lice are kind of like fleas that only infect humans. Don't worry, they don't just spontaneously evolve on your head. However, it is very easy for them to spread from one person to another.
The eggs attach close to the root of the hair, withing the first couple inches. They're white and very small, about the size of the period at the end of this sentence. Also, they're shaped like a teardrop.
They can occur anywhere on the head, but are most frequent around the hairline, especially the warmer areas behind the ears and at the nape of the neck.
Tea Tree Oil is said to help prevent lice infection. A lot of shampoos are made with it. A common one is Paul Mitchell's Tea Tree line, which is great. If you prefer a sulfate-free option, I have one by Mill Creek Botanicals. Sometimes you have to wash 2 or 3 times with that one to get it to sud, though.
Disclaimer: The information provided in MDJunction is not a replacement for medical diagnosis, treatment, or professional medical advice.
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