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The Toppik Hair Building Fibers - Black Economy is a breakthrough product designed to make thinning hair look completely thick and full. It's made of colored keratin protein, and blends undetectably with existing hair, making fine hair look fuller. The Toppik Hair Building Fibers resist wind, rain, and perspiration, but they will wash out easily with any shampoo. With the Hair Building Fibers, you can dramatically improve the appearance of thinning hair in just 30 seconds. To use it, all you have to do is shake it onto your thinning areas. Instantly fills in thinning areas Makes fine hair look completely thick and full Great as a root touch-up between colorings