// Are mayonnaise, Vaseline, and olive oil effective in treating head lice?

Mayonnaise, vaseline and olive oil are simply combing aids – they don’t kill the head lice or the eggs, they just make it easy to get the nit comb through the hair. You are much better off using a leave in de-tangler or conditioner because it is a nightmare to get all three out of the hair when you have finished!

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