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Questions asked by users might not always be phrased in the clearest way.
Sodium lauryl sulfate (SLS) is an anionic surfactant often used in shampoos and other cleaning products. It is a powerful cleansing agent that can strip away natural oils from the scalp. While this cleansing action may temporarily reduce dandruff, it can also irritate and dry out the scalp, potentially exacerbating the problem in some cases. Some shampoos contain SLS, but formulations with gentler surfactants are available for those with sensitive scalps or dandruff issues.