HUM Hair Strong Biotin & Zinc - 30 Vegan CapsulesHUM Hair Strong is the world's first clinically studied hair growth supplement available in convenient capsule form. This once daily capsule features a clinically studied formula and is the only Clean Label Project certified hair supplement on the market. HUM products are Clean Label Project Certified, non GMO, and rigorously tested to meet high standards for quality and safety, made without artificial flavors, sweeteners, or colors. The capsule is