DHS Zinc Shampoo 8 oz (Pack of 3) is highly recommended if you have dandruff or seborrheic dermatitis. Controlling these scalp conditions can be a bit difficult if you are not using the right products. With the Zinc DHS shampoo, you can easily do so. This contains 2 percent of Zinc Pyrithione which is proven effective in relieving the symptoms of these said skin conditions. This has a long-lasting effect of soothing and nourishing your scalp and hair, so the comfort that you feel after using the DHS shampoo can actually last longer than you think. With the gentle healing properties of the DHS shampoo, comfort is achieved just after using, and this will continue if you regularly use this.