Some good medicated shampoos for an itchy, dry scalp and hair loss are Eucerin, Head & Shoulders, and the selenium sulfide and zinc-based shampoo Selsun Blue, according to the products' official websites. Other options include using tar-based shampoos such as T-Gel or DHS Tar Shampoo.
A dry, itchy scalp can occur when the natural moisture balance is disturbed, explains StyleList. Several factors can cause this to happen. Dermatitis, psoriasis and other skin conditions can cause dryness and itching, and the natural aging process can contribute to this as well. Hair loss can occur with excessive scratching.
Eucerin is a calming shampoo that soothes and relieves scalp itching, while still providing softness and shine. Eucerin calms the inflammation on the surface of the skin. Head & Shoulders and Selsun Blue both contain zinc pyrthione. They are effective shampoos with both anti-fungal and antibacterial properties, notes Hair Sentinel.
Tar-based shampoos help by slowing down the rate at which the surface skin cells die and flake off, reports Hair Sentinel. Selenium sulfide-based shampoos also slow down the rate at which the skin cells die. They inhibit scalp yeast, or malassezia, which contributes to itchiness of the scalp.
Ketoconazole-based shampoos such as Nizoral A-D Anti-Dandruff Shampoo contain anti-fungal ingredients. This shampoo is also effective in inhibiting scalp yeast. Shampoos containing tea tree oil also are effective against scalp yeast because of their antibacterial and anti-fungal properties, according to StyleList.