what is a good shampoo for very dry scalp?
['LivSo Moisturizing Shampoo.', 'Neutrogena T/Gel Extra Strength Therapeutic Shampoo.', 'Nizoral Anti-Dandruff Shampoo.', 'DHS Zinc Shampoo.', 'Dermacare Scalp Anti-Dandruff Shampoo.', 'Head & Shoulders Classic Clean Dandruff Shampoo.']