Conceal balding spots and thinning hair with a hair loss concealer like Toppik Hair Building Fibers. Toppik Hair Building Fibers come in 9 different shades to match most natural hair colors. The tiny microfibers are extremely subtle and undetectable from as close as 2 inches away. When shaken over hair, the fibers securely bond to your natural hair. Toppik Hair Building Fibers stay put throughout the rain, wind or perspiration, but wash out easily with shampoo.