While much of the haircare conversation is dominated by its outward appearance—the shine, the bounce, the color—what occurs at the root is equally important. Those looking to address dandruff (a common concern that affects about half the population ) can find treatments in and outside the shampoo aisle nowadays, thanks to a greater emphasis on overall hair health that addresses both tell-tale and underlying signs of dandruff. The best dandruff shampoo, used in tandem with a detoxifying scalp product , can help remedy the various ways dandruff makes itself known— flaking, excess oil, itchiness, and even clogged hair follicles.

Below, leading experts break down what causes dandruff, the best way to wash your scalp, what ingredients are in dandruff shampoos, and if prevention is truly po

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