HairCubed ® Fibers Medium Brown WaterProof, Color 6 , 7 , 8 Solution for thinning hair, Fine hair or balding areas as well as cowlick. * In case your purchase fiber does not match your hair color, we will provide a free exchange. (See Chart Below)We recommend for you to view the shade "Hair Cubed Dark Brown" if your hair color is close to the darker shades.HairCubed ® Fibers Medium Brown WaterProof, Color 6 , 7 , 8 New generation of micro-fibers technology to triple your hair supply by 3. It is the only product on the market that thickens your actual hair rather than just covering up your scalp, which causes more hair loss. The more you brush HairCubed, The thicker your natural hair becomes, Covering up thinning, fine or balding areas as well as cowlick.