What is the best treatment for an itchy and dry scalp?

Shampoos with sulfur or tar bases and those containing salicylic acid provide the best treatment for a dry and itchy scalp. The condition has multiple possible causes, including psoriasis, seborrhea dermatitis and other skin conditions, and such shampoos normally work for them all, according to Fox News.

Head and Shoulders and Selsun Blue are the most popular sulfur-based shampoos; Neutrogena T-Gel has a tar base, while Neutrogena T/Sal has salicylic acid. All three of these reduce flaking and itching. If the conditions persist after two weeks of use, consider visiting a dermatologist to discuss more aggressive treatment options, states Fox News.