Many products: There are many products available, both over-the-counter and prescription. Apply exactly as directed, following all directions for preparation and time left on. All of the OTC ones should be repeated once in 4-7 days after first use to eradicate any newly hatched lice. Prescription ones usually penetrate the unhatched eggs and kill, so don't need re-application. You must also clean combs.
Answered 7/26/2014
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