Medicated shampoos are specialized hair care products designed to treat specific scalp and hair conditions. They often contain active ingredients like salicylic acid, ketoconazole, or zinc pyrithione that help combat issues such as dandruff, psoriasis, or seborrheic dermatitis. These shampoos work by targeting the underlying causes of these conditions, providing relief from symptoms like itching and flaking. Using medicated shampoos typically involves applying the product to the scalp and leaving it on for a few minutes before rinsing. It's important to follow the instructions on the label or consult a healthcare professional for the best results. Regular use can help maintain a healthy scalp and improve overall hair health.