Tip: With my thick hair, the main issue is getting the medicated shampoo to the scalp — where it belongs. Phillips has advice for that, too. "Get it super, super, super wet, and do it in segments," she noted. "Add shampoo to the three middle fingers and lift the hair to get to the skin." She recommends dividing hair into five sections: each side, the front between the temples, the nape, and the crown. I resorted to putting shampoo in a bottle with a pointed nozzle.
Dermatologists recommend: Head & Shoulders Classic Clean Shampoo ($7)