Toppik Hair Building Fibers Black 27.5 gToppik Hair Building Fibers Black 27. 5 g What It Is: Toppik Hair Building Fibers are a popular cosmetic product designed to instantly conceal thinning hair and bald spots. Made from natural keratin protein the same protein your hair is made of these fibers cling to your existing hair strands, creating a fuller, thicker look within seconds. Key Features: Natural Keratin Protein: Blends seamlessly with your own hair for a natural, undetectable