Washing the hair each day may dislodge a few active lice; the remaining lice and eggs will be unaffected (but clean). Although hair bleaches and dyes are meant for use on the scalp, they can be caustic. Data is lacking to assess the efficacy of these products against lice. Thus, use of these products in attempts to ‘treat’ lice should probably not be considered. Assertions that dandruff shampoos are effective in removing lice are probably due to the frequent misidentification of dandruff as lice and louse eggs.
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