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"  Did you know that while not washing your hair often enough is a main cause of dandruff, doing just the opposite, that is, washing it frequently, can also cause the embarrassing flaking and intolerable itching? Shampoos containing harsh ingredients like ammonium lauryl sulfate (ALS), an anionic surfactant, can dry out your scalp and cause irritation and flaking. Wash your hair often with these shampoos and the problem will continue to get worse. What to do? Read labels and look for shampoos containing gentle surfactants like sodium laureth sulfate (SLES). Nondrying sulfate-free shampoos are another great alternative. If dandruff isn&amp;#039;t your problem, read our story The Simple Secret to Great Hair for advice on choosing a shampoo. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.goodhousekeeping.com/institute/a22471/choosing-dandruff-shampoo/>