Dry scalp is a common condition, which may be caused by extreme weather, the use of harsh products or chemicals, the growth of fungus on the scalp or more severe conditions like psoriasis. Over-the-counter or prescription shampoos are often useful for relieving inflammation and itching. The Mayo Clinic suggests experimenting with several types of medicated shampoos to find the best treatment for your condition.
Salicylic Acid
Salicylic acid is in a class of medications known as keratolytic agents, according to Medline Plus. As the main ingredient in a multitude of medicines for topical use, salicylic acid helps stimulate skin shedding, which helps relieve irritations of the skin such as acne, calluses and warts. For scalp irritations, such as dandruff and scalp psoriasis, salicylic acid may work by softening and loosening dry, scaly or thickened skin. The Mayo Clinic reports topical corticosteroids and cool tar are often used in conjunction with salicylic acid to increase its effectiveness. Look for medicated shampoos containing the medicine over-the-counter. For severe dry scalp conditions, ask your doctor about a prescription formula.
Cool Tar
Cool tar is an old-fashioned remedy for skin irritations. The Mayo Clinic explains the thick, sticky substance is a byproduct of the manufacture of petroleum products and coal. The pungent odor and untidy application process makes cool tar difficult to use. However, those who endure the odor and mess often find relief of scaling, itching and inflammation. Over-the-counter shampoos allow users to lather and rinse the product. Other cool tar products include creams and oils.
Zinc Pyrithione
Zinc pyrithione is an active ingredient in commonly used dandruff shampoos found over-the-counter. According to the Mayo Clinic, zinc pyrithione is an antifungal agent, which decreases scalp fungus that leads to skin irritations such as dandruff and seborrheic dermatitis.
Selenium Sulfide
Selenium sulfide is used to treat skin infections and scalp conditions. It is used in anti-dandruff shampoos found over-the-counter and in prescription formulas. The medicine helps decrease skin flaking by slowing skin cells from dying, according to the Mayo Clinic. Discoloration of the hair may result among those with gray, blond or chemically colored hair.
