You can always trust Head & Shoulders to help Treat and Prevent a dry scalp. This winter, I used a lot of heat styling on my hair with my hair dryer and flat iron and this caused my scalp to get very dry. So I purchased the Head & Shoulders Citrus Fresh Shampoo for greasy hair, which a beautiful citrus scent. The results were amazing, after the very first wash, my scalp regained its moisture and there is less and less visible signs of a dry scalp.