From hair loss to dandruff, scalp problems of any sort are distressing to anyone suffering from them.<br />But according to Allure Magazine, scalp psoriasis is a chart-topper for both pain and inconvenience.<br />Scalp psoriasis is a common condition characterized by thick, red scaly patches of skin that can cover the entire scalp and be chronic.<br />It's often treated with oils, steroid solutions, and even ointments. However, basic care for it starts with the shampoo you use.<br />Dermatologist Dr. Sejal Shah says sufferers should use a shampoo comprised of ingredients such as salicylic acid and coal tar.<br />Coal tar is a by-product of the production of coke and coal gas from coal. It's used in medications to treat psoriasis and seborrheic dermatitis.<br />It may sound scary, but dermatologists say it significantly helps to slow down the rapid growth of skin cells while reducing inflammation.