Thicker-Looking Hair

Hair that tangles and snaps when you comb it? Here's how a rosemary and vervain conditioner helps, how to use it properly, and simple habits that cut down on breakage.

Fine, flat or color-treated hair? Learn what caffeine does in a shampoo, why a sulfate-free formula is gentler, and how to choose between a caffeine and a biotin shampoo.

Flat, fine hair that breaks when you brush it? Here's what a biotin shampoo really does, which ingredients matter, and how to use it for thicker, fuller-looking hair.