Toppik Hair Building Fibers in Dark Brown (55g) is an innovative hair thickening solution that instantly creates the appearance of fuller, thicker hair. Using natural keratin protein fibers that bond to existing hair, this larger size container provides extended coverage for those experiencing thinning hair. Key features: • Made with natural keratin protein fibers • Instantly creates fuller-looking hair • Color-matched for dark brown hair • Weather and wind resistant • Stays in place until next shampoo • Large 55g container size The product uses statically charged fibers that securely bond to even the finest hair strands, creating natural-looking density and coverage. The dark brown shade is specifically formulated to blend seamlessly with natural dark brown hair colors. The fibers are resistant to wind, rain and perspiration but wash out easily with regular shampoo. Suitable for both men and women looking to conceal thinning areas or add overall volume to their hair.