Toppik Hair Building Fibers Black 12 gToppik Hair Building Fibers Black (12g) is a cosmetic product designed to instantly make thinning hair look fuller and thicker. It uses keratin based microfibers that cling to your existing hair through static electricity, blending naturally to conceal bald spots or areas with reduced density. Color: Black for individuals with black or very dark hair. Size: 12 grams enough for approximately 2040 applications depending on the area covered. Suitable