Hair growth supplements are a booming market, promising fuller, thicker hair and faster growth for men and women alike. From biotin and collagen to multi-nutrient blends, they come in many forms, often making impressive claims. …

Hair growth supplements are a booming market, promising fuller, thicker hair and faster growth for men and women alike. From biotin and collagen to multi-nutrient blends, they come in many forms, often making impressive claims. …